139677696 has 130 divisors (see below), whose sum is σ = 418248842. Its totient is φ = 46448640.

The previous prime is 139677677. The next prime is 139677709. The reversal of 139677696 is 696776931.

It can be written as a sum of positive squares in only one way, i.e., 74649600 + 65028096 = 8640^2 + 8064^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 331566 + ... + 331986.

Almost surely, 2^139677696 is an apocalyptic number.

139677696 is a gapful number since it is divisible by the number (16) 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 139677696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209124421).

139677696 is an abundant number, since it is smaller than the sum of its proper divisors (278571146).

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

139677696 is an frugal number, since it uses more digits than its factorization.

139677696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 426 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 54.

The square root of 139677696 is about 11818.5318885215. The cubic root of 139677696 is about 518.8506369615.

The spelling of 139677696 in words is "one hundred thirty-nine million, six hundred seventy-seven thousand, six hundred ninety-six".