139794459 has 8 divisors (see below), whose sum is σ = 213020160. Its totient is φ = 79882536.

The previous prime is 139794439. The next prime is 139794509. The reversal of 139794459 is 954497931.

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

It is not a de Polignac number, because 139794459 - 2⁵ = 139794427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139794439) 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, 3328419 + ... + 3328460.

It is an arithmetic number, because the mean of its divisors is an integer number (26627520).

Almost surely, 2^139794459 is an apocalyptic number.

139794459 is a deficient number, since it is larger than the sum of its proper divisors (73225701).

139794459 is an equidigital number, since it uses as much as digits as its factorization.

139794459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6656889.

The product of its digits is 1224720, while the sum is 51.

The square root of 139794459 is about 11823.4706833484. The cubic root of 139794459 is about 518.9951737182.

The spelling of 139794459 in words is "one hundred thirty-nine million, seven hundred ninety-four thousand, four hundred fifty-nine".