7981912 has 8 divisors (see below), whose sum is σ = 14966100. Its totient is φ = 3990952.

The previous prime is 7981907. The next prime is 7981927. The reversal of 7981912 is 2191897.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 498862 + ... + 498877.

Almost surely, 2^7981912 is an apocalyptic number.

It is an amenable number.

7981912 is a deficient number, since it is larger than the sum of its proper divisors (6984188).

7981912 is a wasteful number, since it uses less digits than its factorization.

7981912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997745 (or 997741 counting only the distinct ones).

The product of its digits is 9072, while the sum is 37.

The square root of 7981912 is about 2825.2277784278. The cubic root of 7981912 is about 199.8491529211.

The spelling of 7981912 in words is "seven million, nine hundred eighty-one thousand, nine hundred twelve".