77430940 has 12 divisors (see below), whose sum is σ = 162605016. Its totient is φ = 30972368.

The previous prime is 77430931. The next prime is 77430953. The reversal of 77430940 is 4903477.

It is a junction number, because it is equal to n+sod(n) for n = 77430896 and 77430905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1935754 + ... + 1935793.

It is an arithmetic number, because the mean of its divisors is an integer number (13550418).

Almost surely, 2^77430940 is an apocalyptic number.

It is an amenable number.

77430940 is an abundant number, since it is smaller than the sum of its proper divisors (85174076).

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

77430940 is a wasteful number, since it uses less digits than its factorization.

77430940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871556 (or 3871554 counting only the distinct ones).

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

The square root of 77430940 is about 8799.4852122155. The cubic root of 77430940 is about 426.2242715441.

The spelling of 77430940 in words is "seventy-seven million, four hundred thirty thousand, nine hundred forty".