27799431 has 8 divisors (see below), whose sum is σ = 40435584. Its totient is φ = 16848120.

The previous prime is 27799427. The next prime is 27799441. The reversal of 27799431 is 13499772.

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

It is not a de Polignac number, because 27799431 - 2² = 27799427 is a prime.

It is a super-2 number, since 2×27799431² = 1545616727847522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27799441) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 421171 + ... + 421236.

It is an arithmetic number, because the mean of its divisors is an integer number (5054448).

Almost surely, 2^27799431 is an apocalyptic number.

27799431 is a deficient number, since it is larger than the sum of its proper divisors (12636153).

27799431 is a wasteful number, since it uses less digits than its factorization.

27799431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842421.

The product of its digits is 95256, while the sum is 42.

The square root of 27799431 is about 5272.5165718089. The cubic root of 27799431 is about 302.9321047321.

The spelling of 27799431 in words is "twenty-seven million, seven hundred ninety-nine thousand, four hundred thirty-one".