139364593 has 4 divisors (see below), whose sum is σ = 140462080. Its totient is φ = 138267108.

The previous prime is 139364581. The next prime is 139364627. The reversal of 139364593 is 395463931.

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.

It is a cyclic number.

It is not a de Polignac number, because 139364593 - 2¹³ = 139356401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139364503) 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, 548553 + ... + 548806.

It is an arithmetic number, because the mean of its divisors is an integer number (35115520).

Almost surely, 2^139364593 is an apocalyptic number.

It is an amenable number.

139364593 is a deficient number, since it is larger than the sum of its proper divisors (1097487).

139364593 is a wasteful number, since it uses less digits than its factorization.

139364593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097486.

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

The square root of 139364593 is about 11805.2781839311. The cubic root of 139364593 is about 518.4626598947.

The spelling of 139364593 in words is "one hundred thirty-nine million, three hundred sixty-four thousand, five hundred ninety-three".