137780404 has 6 divisors (see below), whose sum is σ = 241115714. Its totient is φ = 68890200.

The previous prime is 137780389. The next prime is 137780407. The reversal of 137780404 is 404087731.

It can be written as a sum of positive squares in only one way, i.e., 105267600 + 32512804 = 10260^2 + 5702^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 137780404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137780407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17222547 + ... + 17222554.

Almost surely, 2^137780404 is an apocalyptic number.

It is an amenable number.

137780404 is a deficient number, since it is larger than the sum of its proper divisors (103335310).

137780404 is a wasteful number, since it uses less digits than its factorization.

137780404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34445105 (or 34445103 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 137780404 is about 11737.9897767889. The cubic root of 137780404 is about 516.4906746176.

The spelling of 137780404 in words is "one hundred thirty-seven million, seven hundred eighty thousand, four hundred four".