139963453 has 6 divisors (see below), whose sum is σ = 162814686. Its totient is φ = 119968632.

The previous prime is 139963429. The next prime is 139963493. The reversal of 139963453 is 354369931.

It can be written as a sum of positive squares in only one way, i.e., 129549924 + 10413529 = 11382^2 + 3227^2 .

It is not a de Polignac number, because 139963453 - 2²⁵ = 106409021 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 (139963403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1428150 + ... + 1428247.

It is an arithmetic number, because the mean of its divisors is an integer number (27135781).

Almost surely, 2^139963453 is an apocalyptic number.

It is an amenable number.

139963453 is a deficient number, since it is larger than the sum of its proper divisors (22851233).

139963453 is an equidigital number, since it uses as much as digits as its factorization.

139963453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856411 (or 2856404 counting only the distinct ones).

The product of its digits is 262440, while the sum is 43.

The square root of 139963453 is about 11830.6150727678. The cubic root of 139963453 is about 519.2042229000.

The spelling of 139963453 in words is "one hundred thirty-nine million, nine hundred sixty-three thousand, four hundred fifty-three".