777890412 has 96 divisors (see below), whose sum is σ = 2186340800. Its totient is φ = 237758976.

The previous prime is 777890389. The next prime is 777890423. The reversal of 777890412 is 214098777.

It is a happy number.

It is a super-2 number, since 2×777890412² = 1210226986163059488, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218664 + ... + 222192.

Almost surely, 2^777890412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 777890412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1093170400).

777890412 is an abundant number, since it is smaller than the sum of its proper divisors (1408450388).

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

777890412 is a wasteful number, since it uses less digits than its factorization.

777890412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712 (or 3704 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 777890412 is about 27890.6868327046. The cubic root of 777890412 is about 919.6857827384.

The spelling of 777890412 in words is "seven hundred seventy-seven million, eight hundred ninety thousand, four hundred twelve".