399512272537436 has 12 divisors (see below), whose sum is σ = 699148524584160. Its totient is φ = 199755551227680.

The previous prime is 399512272537397. The next prime is 399512272537453. The reversal of 399512272537436 is 634735272215993.

It is a super-2 number, since 2×399512272537436² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144721985 + ... + 147456696.

It is an arithmetic number, because the mean of its divisors is an integer number (58262377048680).

Almost surely, 2^{399512272537436} is an apocalyptic number.

It is an amenable number.

399512272537436 is a deficient number, since it is larger than the sum of its proper divisors (299636252046724).

399512272537436 is a wasteful number, since it uses less digits than its factorization.

399512272537436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292520524 (or 292520522 counting only the distinct ones).

The product of its digits is 514382400, while the sum is 68.

The spelling of 399512272537436 in words is "three hundred ninety-nine trillion, five hundred twelve billion, two hundred seventy-two million, five hundred thirty-seven thousand, four hundred thirty-six".