139483431 has 16 divisors (see below), whose sum is σ = 215627520. Its totient is φ = 88945560.

The previous prime is 139483397. The next prime is 139483441. The reversal of 139483431 is 134384931.

139483431 is a `hidden beast` number, since 139 + 483 + 43 + 1 = 666.

It is not a de Polignac number, because 139483431 - 2⁶ = 139483367 is a prime.

It is a super-2 number, since 2×139483431² = 38911255047063522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139483441) 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 15 ways as a sum of consecutive naturals, for example, 111685 + ... + 112926.

It is an arithmetic number, because the mean of its divisors is an integer number (13476720).

Almost surely, 2^139483431 is an apocalyptic number.

139483431 is a deficient number, since it is larger than the sum of its proper divisors (76144089).

139483431 is a wasteful number, since it uses less digits than its factorization.

139483431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224643 (or 224637 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 139483431 is about 11810.3103684874. The cubic root of 139483431 is about 518.6099846439.

The spelling of 139483431 in words is "one hundred thirty-nine million, four hundred eighty-three thousand, four hundred thirty-one".