139562493 has 8 divisors (see below), whose sum is σ = 212666688. Its totient is φ = 79749984.

The previous prime is 139562491. The next prime is 139562497. The reversal of 139562493 is 394265931.

It is a happy number.

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

It is not a de Polignac number, because 139562493 - 2¹ = 139562491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139562491) 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, 3322896 + ... + 3322937.

It is an arithmetic number, because the mean of its divisors is an integer number (26583336).

Almost surely, 2^139562493 is an apocalyptic number.

It is an amenable number.

139562493 is a deficient number, since it is larger than the sum of its proper divisors (73104195).

139562493 is an equidigital number, since it uses as much as digits as its factorization.

139562493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6645843.

The product of its digits is 174960, while the sum is 42.

The square root of 139562493 is about 11813.6570544434. The cubic root of 139562493 is about 518.7079523087.

The spelling of 139562493 in words is "one hundred thirty-nine million, five hundred sixty-two thousand, four hundred ninety-three".