2791427 has 4 divisors (see below), whose sum is σ = 2797920. Its totient is φ = 2784936.

The previous prime is 2791409. The next prime is 2791429. The reversal of 2791427 is 7241972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2791427 - 2⁶ = 2791363 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2791393 and 2791402.

It is not an unprimeable number, because it can be changed into a prime (2791429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2552 + ... + 3477.

It is an arithmetic number, because the mean of its divisors is an integer number (699480).

2^2791427 is an apocalyptic number.

2791427 is a deficient number, since it is larger than the sum of its proper divisors (6493).

2791427 is an equidigital number, since it uses as much as digits as its factorization.

2791427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6492.

The product of its digits is 7056, while the sum is 32.

The square root of 2791427 is about 1670.7564155196. The cubic root of 2791427 is about 140.8019787891.

The spelling of 2791427 in words is "two million, seven hundred ninety-one thousand, four hundred twenty-seven".