139057443 has 36 divisors (see below), whose sum is σ = 238661280. Its totient is φ = 77759136.

The previous prime is 139057441. The next prime is 139057469. The reversal of 139057443 is 344750931.

It is not a de Polignac number, because 139057443 - 2¹ = 139057441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139057398 and 139057407.

It is not an unprimeable number, because it can be changed into a prime (139057441) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17373 + ... + 24081.

It is an arithmetic number, because the mean of its divisors is an integer number (6629480).

Almost surely, 2^139057443 is an apocalyptic number.

139057443 is a deficient number, since it is larger than the sum of its proper divisors (99603837).

139057443 is a wasteful number, since it uses less digits than its factorization.

139057443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776 (or 6766 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 139057443 is about 11792.2619967502. The cubic root of 139057443 is about 518.0814943611.

The spelling of 139057443 in words is "one hundred thirty-nine million, fifty-seven thousand, four hundred forty-three".