257462389 has 2 divisors, whose sum is σ = 257462390. Its totient is φ = 257462388.

The previous prime is 257462383. The next prime is 257462453. The reversal of 257462389 is 983264752.

257462389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247590225 + 9872164 = 15735^2 + 3142^2 .

It is a cyclic number.

It is not a de Polignac number, because 257462389 - 2¹⁵ = 257429621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257462383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128731194 + 128731195.

It is an arithmetic number, because the mean of its divisors is an integer number (128731195).

Almost surely, 2^257462389 is an apocalyptic number.

It is an amenable number.

257462389 is a deficient number, since it is larger than the sum of its proper divisors (1).

257462389 is an equidigital number, since it uses as much as digits as its factorization.

257462389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The square root of 257462389 is about 16045.6345776663. The cubic root of 257462389 is about 636.1671872023.

The spelling of 257462389 in words is "two hundred fifty-seven million, four hundred sixty-two thousand, three hundred eighty-nine".