139454965 has 16 divisors (see below), whose sum is σ = 189705600. Its totient is φ = 97561152.

The previous prime is 139454951. The next prime is 139454983. The reversal of 139454965 is 569454931.

It is not a de Polignac number, because 139454965 - 2¹¹ = 139452917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55225 + ... + 57694.

It is an arithmetic number, because the mean of its divisors is an integer number (11856600).

Almost surely, 2^139454965 is an apocalyptic number.

It is an amenable number.

139454965 is a deficient number, since it is larger than the sum of its proper divisors (50250635).

139454965 is a wasteful number, since it uses less digits than its factorization.

139454965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112956.

The product of its digits is 583200, while the sum is 46.

The square root of 139454965 is about 11809.1051735515. The cubic root of 139454965 is about 518.5747026607.

The spelling of 139454965 in words is "one hundred thirty-nine million, four hundred fifty-four thousand, nine hundred sixty-five".