397862461 has 4 divisors (see below), whose sum is σ = 397929532. Its totient is φ = 397795392.

The previous prime is 397862453. The next prime is 397862477. The reversal of 397862461 is 164268793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 381459961 + 16402500 = 19531^2 + 4050^2 .

It is a cyclic number.

It is not a de Polignac number, because 397862461 - 2³ = 397862453 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 (397862411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23670 + ... + 36823.

It is an arithmetic number, because the mean of its divisors is an integer number (99482383).

Almost surely, 2^397862461 is an apocalyptic number.

It is an amenable number.

397862461 is a deficient number, since it is larger than the sum of its proper divisors (67071).

397862461 is an equidigital number, since it uses as much as digits as its factorization.

397862461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67070.

The product of its digits is 435456, while the sum is 46.

The square root of 397862461 is about 19946.4899418419. The cubic root of 397862461 is about 735.4914947327.

The spelling of 397862461 in words is "three hundred ninety-seven million, eight hundred sixty-two thousand, four hundred sixty-one".