139576493 has 8 divisors (see below), whose sum is σ = 159861312. Its totient is φ = 119378016.

The previous prime is 139576487. The next prime is 139576499. The reversal of 139576493 is 394675931.

It is an interprime number because it is at equal distance from previous prime (139576487) and next prime (139576499).

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

It is a cyclic number.

It is not a de Polignac number, because 139576493 - 2¹⁸ = 139314349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139576499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18080 + ... + 24617.

It is an arithmetic number, because the mean of its divisors is an integer number (19982664).

Almost surely, 2^139576493 is an apocalyptic number.

It is an amenable number.

139576493 is a deficient number, since it is larger than the sum of its proper divisors (20284819).

139576493 is an equidigital number, since it uses as much as digits as its factorization.

139576493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43171.

The product of its digits is 612360, while the sum is 47.

The square root of 139576493 is about 11814.2495741372. The cubic root of 139576493 is about 518.7252961962.

The spelling of 139576493 in words is "one hundred thirty-nine million, five hundred seventy-six thousand, four hundred ninety-three".