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39604421 = 972811453
BaseRepresentation
bin1001011100010…
…1000011000101
32202112010001102
42113011003011
540114320141
63532505445
7660426533
oct227050305
982463042
1039604421
11203a042a
121131b285
13828878c
14538d153
15372499b
hex25c50c5

39604421 has 8 divisors (see below), whose sum is σ = 40182744. Its totient is φ = 39029760.

The previous prime is 39604403. The next prime is 39604447. The reversal of 39604421 is 12440693.

It can be written as a sum of positive squares in 4 ways, for example, as 19228225 + 20376196 = 4385^2 + 4514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39604421 - 222 = 35410117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39604121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26531 + ... + 27983.

It is an arithmetic number, because the mean of its divisors is an integer number (5022843).

Almost surely, 239604421 is an apocalyptic number.

It is an amenable number.

39604421 is a deficient number, since it is larger than the sum of its proper divisors (578323).

39604421 is a wasteful number, since it uses less digits than its factorization.

39604421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 39604421 is about 6293.2043507263. The cubic root of 39604421 is about 340.8640680766.

The spelling of 39604421 in words is "thirty-nine million, six hundred four thousand, four hundred twenty-one".

Divisors: 1 97 281 1453 27257 140941 408293 39604421