39937047431 has 8 divisors (see below), whose sum is σ = 40710902400. Its totient is φ = 39166424440.

The previous prime is 39937047391. The next prime is 39937047439. The reversal of 39937047431 is 13474073993.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39937047431 is a prime.

It is a super-2 number, since 2×39937047431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39937047431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39937047439) 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, 783035 + ... + 832476.

It is an arithmetic number, because the mean of its divisors is an integer number (5088862800).

Almost surely, 2^39937047431 is an apocalyptic number.

39937047431 is a deficient number, since it is larger than the sum of its proper divisors (773854969).

39937047431 is a wasteful number, since it uses less digits than its factorization.

39937047431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615989.

The product of its (nonzero) digits is 1714608, while the sum is 50.

The spelling of 39937047431 in words is "thirty-nine billion, nine hundred thirty-seven million, forty-seven thousand, four hundred thirty-one".