139372867 has 2 divisors, whose sum is σ = 139372868. Its totient is φ = 139372866.

The previous prime is 139372859. The next prime is 139372873. The reversal of 139372867 is 768273931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139372867 - 2³ = 139372859 is a prime.

It is not a weakly prime, because it can be changed into another prime (139372267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69686433 + 69686434.

It is an arithmetic number, because the mean of its divisors is an integer number (69686434).

Almost surely, 2^139372867 is an apocalyptic number.

139372867 is a deficient number, since it is larger than the sum of its proper divisors (1).

139372867 is an equidigital number, since it uses as much as digits as its factorization.

139372867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 139372867 is about 11805.6286151988. The cubic root of 139372867 is about 518.4729199736.

The spelling of 139372867 in words is "one hundred thirty-nine million, three hundred seventy-two thousand, eight hundred sixty-seven".