139454959 has 8 divisors (see below), whose sum is σ = 159888800. Its totient is φ = 119149056.

The previous prime is 139454951. The next prime is 139454983. The reversal of 139454959 is 959454931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139454959 - 2³ = 139454951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139454951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29634 + ... + 34015.

It is an arithmetic number, because the mean of its divisors is an integer number (19986100).

Almost surely, 2^139454959 is an apocalyptic number.

139454959 is a deficient number, since it is larger than the sum of its proper divisors (20433841).

139454959 is an equidigital number, since it uses as much as digits as its factorization.

139454959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63969.

The product of its digits is 874800, while the sum is 49.

The square root of 139454959 is about 11809.1049195102. The cubic root of 139454959 is about 518.5746952235.

The spelling of 139454959 in words is "one hundred thirty-nine million, four hundred fifty-four thousand, nine hundred fifty-nine".