77940430 has 16 divisors (see below), whose sum is σ = 142387920. Its totient is φ = 30710592.

The previous prime is 77940383. The next prime is 77940431. The reversal of 77940430 is 3404977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77940431) 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, 57495 + ... + 58834.

It is an arithmetic number, because the mean of its divisors is an integer number (8899245).

Almost surely, 2^77940430 is an apocalyptic number.

77940430 is a deficient number, since it is larger than the sum of its proper divisors (64447490).

77940430 is a wasteful number, since it uses less digits than its factorization.

77940430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116403.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 77940430 is about 8828.3877350284. The cubic root of 77940430 is about 427.1570702640.

It can be divided in two parts, 779 and 40430, that added together give a square (41209 = 203²).

The spelling of 77940430 in words is "seventy-seven million, nine hundred forty thousand, four hundred thirty".