1977009044 has 24 divisors (see below), whose sum is σ = 3478960800. Its totient is φ = 983034720.

The previous prime is 1977009031. The next prime is 1977009059. The reversal of 1977009044 is 4409007791.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1977008992 and 1977009010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742187 + ... + 744845.

It is an arithmetic number, because the mean of its divisors is an integer number (144956700).

Almost surely, 2^1977009044 is an apocalyptic number.

It is an amenable number.

1977009044 is a deficient number, since it is larger than the sum of its proper divisors (1501951756).

1977009044 is a wasteful number, since it uses less digits than its factorization.

1977009044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623 (or 3621 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 1977009044 is about 44463.5698521835. The cubic root of 1977009044 is about 1255.0746333186.

The spelling of 1977009044 in words is "one billion, nine hundred seventy-seven million, nine thousand, forty-four".