139358457 has 12 divisors (see below), whose sum is σ = 230052160. Its totient is φ = 79633368.

The previous prime is 139358447. The next prime is 139358473. The reversal of 139358457 is 754853931.

139358457 is a `hidden beast` number, since 13 + 9 + 3 + 584 + 57 = 666.

139358457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139358457 - 2⁴ = 139358441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139358437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1105957 + ... + 1106082.

Almost surely, 2^139358457 is an apocalyptic number.

It is an amenable number.

139358457 is a deficient number, since it is larger than the sum of its proper divisors (90693703).

139358457 is a wasteful number, since it uses less digits than its factorization.

139358457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212052 (or 2212049 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 139358457 is about 11805.0182973175. The cubic root of 139358457 is about 518.4550507560.

The spelling of 139358457 in words is "one hundred thirty-nine million, three hundred fifty-eight thousand, four hundred fifty-seven".