1377989044 has 6 divisors (see below), whose sum is σ = 2411480834. Its totient is φ = 688994520.

The previous prime is 1377988981. The next prime is 1377989069. The reversal of 1377989044 is 4409897731.

It can be written as a sum of positive squares in only one way, i.e., 1130304400 + 247684644 = 33620^2 + 15738^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1377988982 and 1377989000.

It is a congruent number.

It is an unprimeable number.

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, 172248627 + ... + 172248634.

Almost surely, 2^1377989044 is an apocalyptic number.

It is an amenable number.

1377989044 is a deficient number, since it is larger than the sum of its proper divisors (1033491790).

1377989044 is a wasteful number, since it uses less digits than its factorization.

1377989044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344497265 (or 344497263 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 1377989044 is about 37121.2748164715. The cubic root of 1377989044 is about 1112.7952287042.

The spelling of 1377989044 in words is "one billion, three hundred seventy-seven million, nine hundred eighty-nine thousand, forty-four".