399137271744 has 56 divisors (see below), whose sum is σ = 1056097943680. Its totient is φ = 133039805184.

The previous prime is 399137271739. The next prime is 399137271749. The reversal of 399137271744 is 447172731993.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (399137271739) and next prime (399137271749).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399137271749) 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, 7145877 + ... + 7201515.

Almost surely, 2^399137271744 is an apocalyptic number.

It is an amenable number.

399137271744 is an abundant number, since it is smaller than the sum of its proper divisors (656960671936).

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

399137271744 is a wasteful number, since it uses less digits than its factorization.

399137271744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93017 (or 93007 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 57.

The spelling of 399137271744 in words is "three hundred ninety-nine billion, one hundred thirty-seven million, two hundred seventy-one thousand, seven hundred forty-four".