397138102 has 16 divisors (see below), whose sum is σ = 622740960. Its totient is φ = 189589312.

The previous prime is 397138099. The next prime is 397138111. The reversal of 397138102 is 201831793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18588 + ... + 33760.

It is an arithmetic number, because the mean of its divisors is an integer number (38921310).

Almost surely, 2^397138102 is an apocalyptic number.

397138102 is a deficient number, since it is larger than the sum of its proper divisors (225602858).

397138102 is a wasteful number, since it uses less digits than its factorization.

397138102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15767.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 397138102 is about 19928.3241141848. The cubic root of 397138102 is about 735.0448717727.

Adding to 397138102 its reverse (201831793), we get a palindrome (598969895).

The spelling of 397138102 in words is "three hundred ninety-seven million, one hundred thirty-eight thousand, one hundred two".