77989086 has 36 divisors (see below), whose sum is σ = 196566552. Its totient is φ = 22282344.

The previous prime is 77989063. The next prime is 77989111. The reversal of 77989086 is 68098977.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 43330 + ... + 45093.

It is an arithmetic number, because the mean of its divisors is an integer number (5460182).

Almost surely, 2^77989086 is an apocalyptic number.

77989086 is an abundant number, since it is smaller than the sum of its proper divisors (118577466).

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

77989086 is a wasteful number, since it uses less digits than its factorization.

77989086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88445 (or 88435 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 77989086 is about 8831.1429611348. The cubic root of 77989086 is about 427.2459391219.

The spelling of 77989086 in words is "seventy-seven million, nine hundred eighty-nine thousand, eighty-six".