137775444 has 24 divisors (see below), whose sum is σ = 321666240. Its totient is φ = 45897984.

The previous prime is 137775431. The next prime is 137775467. The reversal of 137775444 is 444577731.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 137775396 and 137775405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36217 + ... + 39839.

It is an arithmetic number, because the mean of its divisors is an integer number (13402760).

Almost surely, 2^137775444 is an apocalyptic number.

It is an amenable number.

137775444 is an abundant number, since it is smaller than the sum of its proper divisors (183890796).

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

137775444 is a wasteful number, since it uses less digits than its factorization.

137775444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6799 (or 6797 counting only the distinct ones).

The product of its digits is 329280, while the sum is 42.

The square root of 137775444 is about 11737.7784950986. The cubic root of 137775444 is about 516.4844767733.

The spelling of 137775444 in words is "one hundred thirty-seven million, seven hundred seventy-five thousand, four hundred forty-four".