7981479 has 12 divisors (see below), whose sum is σ = 12577032. Its totient is φ = 4837200.

The previous prime is 7981471. The next prime is 7981481. The reversal of 7981479 is 9741897.

It is not a de Polignac number, because 7981479 - 2³ = 7981471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7981471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40212 + ... + 40409.

It is an arithmetic number, because the mean of its divisors is an integer number (1048086).

Almost surely, 2^7981479 is an apocalyptic number.

7981479 is a deficient number, since it is larger than the sum of its proper divisors (4595553).

7981479 is a wasteful number, since it uses less digits than its factorization.

7981479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80638 (or 80635 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 7981479 is about 2825.1511463991. The cubic root of 7981479 is about 199.8455390732.

The spelling of 7981479 in words is "seven million, nine hundred eighty-one thousand, four hundred seventy-nine".