139484931 has 8 divisors (see below), whose sum is σ = 191006544. Its totient is φ = 90476640.

The previous prime is 139484929. The next prime is 139484953.

139484931 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 139484931 - 2¹ = 139484929 is a prime.

It is a super-2 number, since 2×139484931² = 38912091952149522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139484981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628200 + ... + 628421.

It is an arithmetic number, because the mean of its divisors is an integer number (23875818).

Almost surely, 2^139484931 is an apocalyptic number.

139484931 is a deficient number, since it is larger than the sum of its proper divisors (51521613).

139484931 is a wasteful number, since it uses less digits than its factorization.

139484931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256661.

The product of its digits is 93312, while the sum is 42.

The square root of 139484931 is about 11810.3738721516. The cubic root of 139484931 is about 518.6118436752.

The spelling of 139484931 in words is "one hundred thirty-nine million, four hundred eighty-four thousand, nine hundred thirty-one".