397965003 has 4 divisors (see below), whose sum is σ = 530620008. Its totient is φ = 265310000.

The previous prime is 397964981. The next prime is 397965017. The reversal of 397965003 is 300569793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300569793 = 3 ⋅100189931.

It is a cyclic number.

It is not a de Polignac number, because 397965003 - 2⁶ = 397964939 is a prime.

It is a super-2 number, since 2×397965003² = 316752287225580018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397965023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66327498 + ... + 66327503.

It is an arithmetic number, because the mean of its divisors is an integer number (132655002).

Almost surely, 2^397965003 is an apocalyptic number.

397965003 is a deficient number, since it is larger than the sum of its proper divisors (132655005).

397965003 is a wasteful number, since it uses less digits than its factorization.

397965003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132655004.

The product of its (nonzero) digits is 153090, while the sum is 42.

The square root of 397965003 is about 19949.0602034281. The cubic root of 397965003 is about 735.5546759388.

The spelling of 397965003 in words is "three hundred ninety-seven million, nine hundred sixty-five thousand, three".