397039772702 has 4 divisors (see below), whose sum is σ = 595559659056. Its totient is φ = 198519886350.

The previous prime is 397039772671. The next prime is 397039772729. The reversal of 397039772702 is 207277930793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 207277930793 = 179 ⋅1157977267.

It is a super-2 number, since 2×397039772702² (a number of 24 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 as a sum of consecutive naturals, namely, 99259943174 + ... + 99259943177.

It is an arithmetic number, because the mean of its divisors is an integer number (148889914764).

Almost surely, 2^397039772702 is an apocalyptic number.

397039772702 is a deficient number, since it is larger than the sum of its proper divisors (198519886354).

397039772702 is a wasteful number, since it uses less digits than its factorization.

397039772702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198519886353.

The product of its (nonzero) digits is 7001316, while the sum is 56.

The spelling of 397039772702 in words is "three hundred ninety-seven billion, thirty-nine million, seven hundred seventy-two thousand, seven hundred two".