139556963 has 8 divisors (see below), whose sum is σ = 171762528. Its totient is φ = 110418624.

The previous prime is 139556941. The next prime is 139556971. The reversal of 139556963 is 369655931.

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 139556963 - 2¹⁰ = 139555939 is a prime.

It is a super-2 number, since 2×139556963² = 38952291843566738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139556983) 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, 766706 + ... + 766887.

It is an arithmetic number, because the mean of its divisors is an integer number (21470316).

Almost surely, 2^139556963 is an apocalyptic number.

139556963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

139556963 is a deficient number, since it is larger than the sum of its proper divisors (32205565).

139556963 is a wasteful number, since it uses less digits than its factorization.

139556963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533613.

The product of its digits is 656100, while the sum is 47.

The square root of 139556963 is about 11813.4230009765. The cubic root of 139556963 is about 518.7011011536.

The spelling of 139556963 in words is "one hundred thirty-nine million, five hundred fifty-six thousand, nine hundred sixty-three".