397624141 has 2 divisors, whose sum is σ = 397624142. Its totient is φ = 397624140.

The previous prime is 397624111. The next prime is 397624189. The reversal of 397624141 is 141426793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213452100 + 184172041 = 14610^2 + 13571^2 .

It is a cyclic number.

It is not a de Polignac number, because 397624141 - 2⁷ = 397624013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397624141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397624111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198812070 + 198812071.

It is an arithmetic number, because the mean of its divisors is an integer number (198812071).

Almost surely, 2^397624141 is an apocalyptic number.

It is an amenable number.

397624141 is a deficient number, since it is larger than the sum of its proper divisors (1).

397624141 is an equidigital number, since it uses as much as digits as its factorization.

397624141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 397624141 is about 19940.5150635584. The cubic root of 397624141 is about 735.3446120283.

The spelling of 397624141 in words is "three hundred ninety-seven million, six hundred twenty-four thousand, one hundred forty-one".