457831639 has 2 divisors, whose sum is σ = 457831640. Its totient is φ = 457831638.

The previous prime is 457831603. The next prime is 457831679. The reversal of 457831639 is 936138754.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 457831639 - 2⁷ = 457831511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457831679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228915819 + 228915820.

It is an arithmetic number, because the mean of its divisors is an integer number (228915820).

Almost surely, 2^457831639 is an apocalyptic number.

457831639 is a deficient number, since it is larger than the sum of its proper divisors (1).

457831639 is an equidigital number, since it uses as much as digits as its factorization.

457831639 is an evil number, because the sum of its binary digits is even.

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

The square root of 457831639 is about 21397.0007010328. Note that the first 3 decimals coincide. The cubic root of 457831639 is about 770.7294145088.

The spelling of 457831639 in words is "four hundred fifty-seven million, eight hundred thirty-one thousand, six hundred thirty-nine".