139355664 has 160 divisors (see below), whose sum is σ = 450256896. Its totient is φ = 36218880.

The previous prime is 139355641. The next prime is 139355687. The reversal of 139355664 is 466553931.

It is an interprime number because it is at equal distance from previous prime (139355641) and next prime (139355687).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176679 + ... + 177465.

Almost surely, 2^139355664 is an apocalyptic number.

139355664 is a gapful number since it is divisible by the number (14) 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 139355664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225128448).

139355664 is an abundant number, since it is smaller than the sum of its proper divisors (310901232).

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

139355664 is a wasteful number, since it uses less digits than its factorization.

139355664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 847 counting only the distinct ones).

The product of its digits is 291600, while the sum is 42.

The square root of 139355664 is about 11804.8999995764. The cubic root of 139355664 is about 518.4515871350.

The spelling of 139355664 in words is "one hundred thirty-nine million, three hundred fifty-five thousand, six hundred sixty-four".