39400509016 has 16 divisors (see below), whose sum is σ = 80591950440. Its totient is φ = 17909322240.

The previous prime is 39400509013. The next prime is 39400509077. The reversal of 39400509016 is 61090500493.

It is a super-2 number, since 2×39400509016² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39400509013) 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, 223866441 + ... + 223866616.

Almost surely, 2^39400509016 is an apocalyptic number.

It is an amenable number.

39400509016 is an abundant number, since it is smaller than the sum of its proper divisors (41191441424).

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

39400509016 is a wasteful number, since it uses less digits than its factorization.

39400509016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447733074 (or 447733070 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The spelling of 39400509016 in words is "thirty-nine billion, four hundred million, five hundred nine thousand, sixteen".