77489000 has 32 divisors (see below), whose sum is σ = 181326600. Its totient is φ = 30995200.

The previous prime is 77488993. The next prime is 77489003. The reversal of 77489000 is 98477.

It can be written as a sum of positive squares in 4 ways, for example, as 4318084 + 73170916 = 2078^2 + 8554^2 .

It is not an unprimeable number, because it can be changed into a prime (77489003) 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 in 7 ways as a sum of consecutive naturals, for example, 37745 + ... + 39744.

Almost surely, 2^77489000 is an apocalyptic number.

It is an amenable number.

77489000 is an abundant number, since it is smaller than the sum of its proper divisors (103837600).

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

77489000 is a wasteful number, since it uses less digits than its factorization.

77489000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77510 (or 77496 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 77489000 is about 8802.7836506414. The cubic root of 77489000 is about 426.3307767669.

The spelling of 77489000 in words is "seventy-seven million, four hundred eighty-nine thousand".