139299264 has 252 divisors, whose sum is σ = 456825096. Its totient is φ = 42052608.

The previous prime is 139299253. The next prime is 139299269. The reversal of 139299264 is 462992931.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139299269) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2628262 + ... + 2628314.

It is an arithmetic number, because the mean of its divisors is an integer number (1812798).

Almost surely, 2^139299264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139299264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228412548).

139299264 is an abundant number, since it is smaller than the sum of its proper divisors (317525832).

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

139299264 is an equidigital number, since it uses as much as digits as its factorization.

139299264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 71 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 139299264 is about 11802.5109192917. The cubic root of 139299264 is about 518.3816351519.

The spelling of 139299264 in words is "one hundred thirty-nine million, two hundred ninety-nine thousand, two hundred sixty-four".