2297991427 has 4 divisors (see below), whose sum is σ = 2299759056. Its totient is φ = 2296223800.

The previous prime is 2297991379. The next prime is 2297991503. The reversal of 2297991427 is 7241997922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7241997922 = 2 ⋅3620998961.

It is a cyclic number.

It is not a de Polignac number, because 2297991427 - 2³¹ = 150507779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2297991827) 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, 881863 + ... + 884464.

It is an arithmetic number, because the mean of its divisors is an integer number (574939764).

Almost surely, 2^2297991427 is an apocalyptic number.

2297991427 is a deficient number, since it is larger than the sum of its proper divisors (1767629).

2297991427 is a wasteful number, since it uses less digits than its factorization.

2297991427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767628.

The product of its digits is 1143072, while the sum is 52.

The square root of 2297991427 is about 47937.3698381545. The cubic root of 2297991427 is about 1319.6217593574.

The spelling of 2297991427 in words is "two billion, two hundred ninety-seven million, nine hundred ninety-one thousand, four hundred twenty-seven".