397790053 has 2 divisors, whose sum is σ = 397790054. Its totient is φ = 397790052.

The previous prime is 397790027. The next prime is 397790059. The reversal of 397790053 is 350097793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202293729 + 195496324 = 14223^2 + 13982^2 .

It is a cyclic number.

It is not a de Polignac number, because 397790053 - 2⁹ = 397789541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397789991 and 397790009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397790059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198895026 + 198895027.

It is an arithmetic number, because the mean of its divisors is an integer number (198895027).

Almost surely, 2^397790053 is an apocalyptic number.

It is an amenable number.

397790053 is a deficient number, since it is larger than the sum of its proper divisors (1).

397790053 is an equidigital number, since it uses as much as digits as its factorization.

397790053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 178605, while the sum is 43.

The square root of 397790053 is about 19944.6748030646. The cubic root of 397790053 is about 735.4468740372.

The spelling of 397790053 in words is "three hundred ninety-seven million, seven hundred ninety thousand, fifty-three".