139825793 has 4 divisors (see below), whose sum is σ = 139984320. Its totient is φ = 139667268.

The previous prime is 139825789. The next prime is 139825823. The reversal of 139825793 is 397528931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 397528931 = 379 ⋅1048889.

It is a cyclic number.

It is not a de Polignac number, because 139825793 - 2² = 139825789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139825193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77933 + ... + 79706.

It is an arithmetic number, because the mean of its divisors is an integer number (34996080).

Almost surely, 2^139825793 is an apocalyptic number.

It is an amenable number.

139825793 is a deficient number, since it is larger than the sum of its proper divisors (158527).

139825793 is an equidigital number, since it uses as much as digits as its factorization.

139825793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158526.

The product of its digits is 408240, while the sum is 47.

The square root of 139825793 is about 11824.7956853385. The cubic root of 139825793 is about 519.0339472624.

The spelling of 139825793 in words is "one hundred thirty-nine million, eight hundred twenty-five thousand, seven hundred ninety-three".