39924016901 has 4 divisors (see below), whose sum is σ = 39955282092. Its totient is φ = 39892751712.

The previous prime is 39924016831. The next prime is 39924016921. The reversal of 39924016901 is 10961042993.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31751676100 + 8172340801 = 178190^2 + 90401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39924016901 is a prime.

It is a super-2 number, since 2×39924016901² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39924016921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15630680 + ... + 15633233.

It is an arithmetic number, because the mean of its divisors is an integer number (9988820523).

Almost surely, 2^39924016901 is an apocalyptic number.

It is an amenable number.

39924016901 is a deficient number, since it is larger than the sum of its proper divisors (31265191).

39924016901 is a wasteful number, since it uses less digits than its factorization.

39924016901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31265190.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 39924016901 in words is "thirty-nine billion, nine hundred twenty-four million, sixteen thousand, nine hundred one".