139488407 has 8 divisors (see below), whose sum is σ = 140849280. Its totient is φ = 138132280.

The previous prime is 139488397. The next prime is 139488413. The reversal of 139488407 is 704884931.

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 139488407 - 2¹² = 139484311 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 (139488457) 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, 88694 + ... + 90252.

It is an arithmetic number, because the mean of its divisors is an integer number (17606160).

Almost surely, 2^139488407 is an apocalyptic number.

139488407 is a deficient number, since it is larger than the sum of its proper divisors (1360873).

139488407 is a wasteful number, since it uses less digits than its factorization.

139488407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 139488407 is about 11810.5210299969. The cubic root of 139488407 is about 518.6161516191.

The spelling of 139488407 in words is "one hundred thirty-nine million, four hundred eighty-eight thousand, four hundred seven".