139429867 has 2 divisors, whose sum is σ = 139429868. Its totient is φ = 139429866.

The previous prime is 139429859. The next prime is 139429877. The reversal of 139429867 is 768924931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139429867 - 2³ = 139429859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139429867.

It is not a weakly prime, because it can be changed into another prime (139429877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69714933 + 69714934.

It is an arithmetic number, because the mean of its divisors is an integer number (69714934).

Almost surely, 2^139429867 is an apocalyptic number.

139429867 is a deficient number, since it is larger than the sum of its proper divisors (1).

139429867 is an equidigital number, since it uses as much as digits as its factorization.

139429867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 139429867 is about 11808.0424711296. The cubic root of 139429867 is about 518.5435911384.

The spelling of 139429867 in words is "one hundred thirty-nine million, four hundred twenty-nine thousand, eight hundred sixty-seven".