39400194731052 has 12 divisors (see below), whose sum is σ = 91933787705816. Its totient is φ = 13133398243680.

The previous prime is 39400194731041. The next prime is 39400194731057. The reversal of 39400194731052 is 25013749100493.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×39400194731052² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39400194730992 and 39400194731010.

It is not an unprimeable number, because it can be changed into a prime (39400194731057) 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, 1641674780449 + ... + 1641674780472.

Almost surely, 2^{39400194731052} is an apocalyptic number.

It is an amenable number.

39400194731052 is an abundant number, since it is smaller than the sum of its proper divisors (52533592974764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39400194731052 is a wasteful number, since it uses less digits than its factorization.

39400194731052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283349560928 (or 3283349560926 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 39400194731052 in words is "thirty-nine trillion, four hundred billion, one hundred ninety-four million, seven hundred thirty-one thousand, fifty-two".