77830983 has 16 divisors (see below), whose sum is σ = 119282400. Its totient is φ = 50097600.

The previous prime is 77830969. The next prime is 77831003. The reversal of 77830983 is 38903877.

It is not a de Polignac number, because 77830983 - 2⁴ = 77830967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77830283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48918 + ... + 50483.

It is an arithmetic number, because the mean of its divisors is an integer number (7455150).

Almost surely, 2^77830983 is an apocalyptic number.

77830983 is a deficient number, since it is larger than the sum of its proper divisors (41451417).

77830983 is a wasteful number, since it uses less digits than its factorization.

77830983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99439 (or 99433 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 77830983 is about 8822.1869737611. The cubic root of 77830983 is about 426.9570330468.

The spelling of 77830983 in words is "seventy-seven million, eight hundred thirty thousand, nine hundred eighty-three".