2249949091 has 4 divisors (see below), whose sum is σ = 2423022112. Its totient is φ = 2076876072.

The previous prime is 2249949077. The next prime is 2249949113. The reversal of 2249949091 is 1909499422.

It is a happy number.

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 2249949091 - 2⁹ = 2249948579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2249949061) 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, 86536491 + ... + 86536516.

It is an arithmetic number, because the mean of its divisors is an integer number (605755528).

Almost surely, 2^2249949091 is an apocalyptic number.

2249949091 is a deficient number, since it is larger than the sum of its proper divisors (173073021).

2249949091 is a wasteful number, since it uses less digits than its factorization.

2249949091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173073020.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 2249949091 is about 47433.6282715122. The cubic root of 2249949091 is about 1310.3608141170.

The spelling of 2249949091 in words is "two billion, two hundred forty-nine million, nine hundred forty-nine thousand, ninety-one".