8880391 has 16 divisors (see below), whose sum is σ = 10175200. Its totient is φ = 7682688.

The previous prime is 8880379. The next prime is 8880413. The reversal of 8880391 is 1930888.

8880391 = T₁₃₅ + T₁₃₆ + ... + T₃₈₁.

It is not a de Polignac number, because 8880391 - 2¹¹ = 8878343 is a prime.

It is a super-2 number, since 2×8880391² = 157722688625762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8880391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8880371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38665 + ... + 38893.

It is an arithmetic number, because the mean of its divisors is an integer number (635950).

Almost surely, 2^8880391 is an apocalyptic number.

8880391 is a deficient number, since it is larger than the sum of its proper divisors (1294809).

8880391 is a wasteful number, since it uses less digits than its factorization.

8880391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 8880391 is about 2979.9984899325. The cubic root of 8880391 is about 207.0828003914.

The spelling of 8880391 in words is "eight million, eight hundred eighty thousand, three hundred ninety-one".