397735501 has 4 divisors (see below), whose sum is σ = 398210400. Its totient is φ = 397260604.

The previous prime is 397735453. The next prime is 397735511. The reversal of 397735501 is 105537793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 105537793 = 1879 ⋅56167.

It is a cyclic number.

It is not a de Polignac number, because 397735501 - 2¹⁵ = 397702733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397735511) 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, 236191 + ... + 237868.

It is an arithmetic number, because the mean of its divisors is an integer number (99552600).

Almost surely, 2^397735501 is an apocalyptic number.

It is an amenable number.

397735501 is a deficient number, since it is larger than the sum of its proper divisors (474899).

397735501 is an equidigital number, since it uses as much as digits as its factorization.

397735501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474898.

The product of its (nonzero) digits is 99225, while the sum is 40.

The square root of 397735501 is about 19943.3071730844. The cubic root of 397735501 is about 735.4132533440.

The spelling of 397735501 in words is "three hundred ninety-seven million, seven hundred thirty-five thousand, five hundred one".