139304593 has 16 divisors (see below), whose sum is σ = 147566160. Its totient is φ = 131328000.

The previous prime is 139304587. The next prime is 139304621. The reversal of 139304593 is 395403931.

It can be written as a sum of positive squares in 8 ways, for example, as 37859409 + 101445184 = 6153^2 + 10072^2 .

It is a cyclic number.

It is not a de Polignac number, because 139304593 - 2¹⁷ = 139173521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139304293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347193 + ... + 347593.

It is an arithmetic number, because the mean of its divisors is an integer number (9222885).

Almost surely, 2^139304593 is an apocalyptic number.

It is an amenable number.

139304593 is a deficient number, since it is larger than the sum of its proper divisors (8261567).

139304593 is a wasteful number, since it uses less digits than its factorization.

139304593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708.

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 139304593 is about 11802.7366741786. The cubic root of 139304593 is about 518.3882454297.

The spelling of 139304593 in words is "one hundred thirty-nine million, three hundred four thousand, five hundred ninety-three".