397158503 has 16 divisors (see below), whose sum is σ = 475061760. Its totient is φ = 324636576.

The previous prime is 397158499. The next prime is 397158511. The reversal of 397158503 is 305851793.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 397158503 - 2² = 397158499 is a prime.

It is a super-4 number, since 4×397158503⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397158533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52313 + ... + 59421.

It is an arithmetic number, because the mean of its divisors is an integer number (29691360).

Almost surely, 2^397158503 is an apocalyptic number.

397158503 is a deficient number, since it is larger than the sum of its proper divisors (77903257).

397158503 is a wasteful number, since it uses less digits than its factorization.

397158503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7486.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 397158503 is about 19928.8359670102. The cubic root of 397158503 is about 735.0574579852.

The spelling of 397158503 in words is "three hundred ninety-seven million, one hundred fifty-eight thousand, five hundred three".