39901983 has 8 divisors (see below), whose sum is σ = 58039296. Its totient is φ = 24183000.

The previous prime is 39901963. The next prime is 39901997. The reversal of 39901983 is 38910993.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-39901983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39901903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604543 + ... + 604608.

It is an arithmetic number, because the mean of its divisors is an integer number (7254912).

Almost surely, 2^39901983 is an apocalyptic number.

39901983 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

39901983 is a deficient number, since it is larger than the sum of its proper divisors (18137313).

39901983 is a wasteful number, since it uses less digits than its factorization.

39901983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209165.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 39901983 is about 6316.8016432369. The cubic root of 39901983 is about 341.7156163327.

The spelling of 39901983 in words is "thirty-nine million, nine hundred one thousand, nine hundred eighty-three".