7479881 has 8 divisors (see below), whose sum is σ = 8050824. Its totient is φ = 6923520.

The previous prime is 7479859. The next prime is 7479887. The reversal of 7479881 is 1889747.

It can be written as a sum of positive squares in 4 ways, for example, as 1229881 + 6250000 = 1109^2 + 2500^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7479881 - 2⁶ = 7479817 is a prime.

It is a super-2 number, since 2×7479881² = 111897239548322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7479887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2570 + ... + 4643.

It is an arithmetic number, because the mean of its divisors is an integer number (1006353).

Almost surely, 2^7479881 is an apocalyptic number.

It is an amenable number.

7479881 is a deficient number, since it is larger than the sum of its proper divisors (570943).

7479881 is a wasteful number, since it uses less digits than its factorization.

7479881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291.

The product of its digits is 112896, while the sum is 44.

The square root of 7479881 is about 2734.9371107943. The cubic root of 7479881 is about 195.5681959350.

The spelling of 7479881 in words is "seven million, four hundred seventy-nine thousand, eight hundred eighty-one".