137899776 has 144 divisors (see below), whose sum is σ = 425021184. Its totient is φ = 38879232.

The previous prime is 137899763. The next prime is 137899819. The reversal of 137899776 is 677998731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607375 + ... + 607601.

It is an arithmetic number, because the mean of its divisors is an integer number (2951536).

Almost surely, 2^137899776 is an apocalyptic number.

137899776 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 137899776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212510592).

137899776 is an abundant number, since it is smaller than the sum of its proper divisors (287121408).

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

137899776 is a wasteful number, since it uses less digits than its factorization.

137899776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 352 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 57.

The square root of 137899776 is about 11743.0735329385. The cubic root of 137899776 is about 516.6397928906.

The spelling of 137899776 in words is "one hundred thirty-seven million, eight hundred ninety-nine thousand, seven hundred seventy-six".