397632153 has 8 divisors (see below), whose sum is σ = 536133600. Its totient is φ = 262109408.

The previous prime is 397632149. The next prime is 397632181. The reversal of 397632153 is 351236793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 397632153 - 2² = 397632149 is a prime.

It is a super-2 number, since 2×397632153² = 316222658198830818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397632113) 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, 744363 + ... + 744896.

It is an arithmetic number, because the mean of its divisors is an integer number (67016700).

Almost surely, 2^397632153 is an apocalyptic number.

It is an amenable number.

397632153 is a deficient number, since it is larger than the sum of its proper divisors (138501447).

397632153 is a wasteful number, since it uses less digits than its factorization.

397632153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489351.

The product of its digits is 102060, while the sum is 39.

The square root of 397632153 is about 19940.7159600652. The cubic root of 397632153 is about 735.3495509818.

The spelling of 397632153 in words is "three hundred ninety-seven million, six hundred thirty-two thousand, one hundred fifty-three".