139713408 has 96 divisors (see below), whose sum is σ = 419599440. Its totient is φ = 44537856.

The previous prime is 139713397. The next prime is 139713419. The reversal of 139713408 is 804317931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139713397) and next prime (139713419).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23860 + ... + 29132.

Almost surely, 2^139713408 is an apocalyptic number.

139713408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139713408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209799720).

139713408 is an abundant number, since it is smaller than the sum of its proper divisors (279886032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139713408 is a wasteful number, since it uses less digits than its factorization.

139713408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316 (or 5301 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 139713408 is about 11820.0426395170. The cubic root of 139713408 is about 518.8948521214.

The spelling of 139713408 in words is "one hundred thirty-nine million, seven hundred thirteen thousand, four hundred eight".