139416479 has 2 divisors, whose sum is σ = 139416480. Its totient is φ = 139416478.

The previous prime is 139416467. The next prime is 139416493. The reversal of 139416479 is 974614931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139416479 - 2⁸ = 139416223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139416419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69708239 + 69708240.

It is an arithmetic number, because the mean of its divisors is an integer number (69708240).

Almost surely, 2^139416479 is an apocalyptic number.

139416479 is a deficient number, since it is larger than the sum of its proper divisors (1).

139416479 is an equidigital number, since it uses as much as digits as its factorization.

139416479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 139416479 is about 11807.4755557655. The cubic root of 139416479 is about 518.5269938245.

The spelling of 139416479 in words is "one hundred thirty-nine million, four hundred sixteen thousand, four hundred seventy-nine".