397835641 has 4 divisors (see below), whose sum is σ = 454669312. Its totient is φ = 341001972.

The previous prime is 397835639. The next prime is 397835651. The reversal of 397835641 is 146538793.

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.

It is a cyclic number.

It is not a de Polignac number, because 397835641 - 2¹ = 397835639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397835591 and 397835600.

It is not an unprimeable number, because it can be changed into a prime (397835621) 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, 28416825 + ... + 28416838.

It is an arithmetic number, because the mean of its divisors is an integer number (113667328).

Almost surely, 2^397835641 is an apocalyptic number.

It is an amenable number.

397835641 is a deficient number, since it is larger than the sum of its proper divisors (56833671).

397835641 is an equidigital number, since it uses as much as digits as its factorization.

397835641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56833670.

The product of its digits is 544320, while the sum is 46.

The square root of 397835641 is about 19945.8176317743. The cubic root of 397835641 is about 735.4749678110.

The spelling of 397835641 in words is "three hundred ninety-seven million, eight hundred thirty-five thousand, six hundred forty-one".