38985490 has 8 divisors (see below), whose sum is σ = 70173900. Its totient is φ = 15594192.

The previous prime is 38985487. The next prime is 38985497. The reversal of 38985490 is 9458983.

38985490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 35676729 + 3308761 = 5973^2 + 1819^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 38985490.

It is not an unprimeable number, because it can be changed into a prime (38985497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1949265 + ... + 1949284.

Almost surely, 2^38985490 is an apocalyptic number.

38985490 is a deficient number, since it is larger than the sum of its proper divisors (31188410).

38985490 is a wasteful number, since it uses less digits than its factorization.

38985490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898556.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 38985490 is about 6243.8361605667. The cubic root of 38985490 is about 339.0790822657.

The spelling of 38985490 in words is "thirty-eight million, nine hundred eighty-five thousand, four hundred ninety".