2249551947 has 4 divisors (see below), whose sum is σ = 2999402600. Its totient is φ = 1499701296.

The previous prime is 2249551903. The next prime is 2249551951. The reversal of 2249551947 is 7491559422.

It is a happy number.

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

It is not a de Polignac number, because 2249551947 - 2⁶ = 2249551883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2249551896 and 2249551905.

It is not an unprimeable number, because it can be changed into a prime (2249551147) 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 3 ways as a sum of consecutive naturals, for example, 374925322 + ... + 374925327.

It is an arithmetic number, because the mean of its divisors is an integer number (749850650).

Almost surely, 2^2249551947 is an apocalyptic number.

2249551947 is a deficient number, since it is larger than the sum of its proper divisors (749850653).

2249551947 is an equidigital number, since it uses as much as digits as its factorization.

2249551947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749850652.

The product of its digits is 907200, while the sum is 48.

The square root of 2249551947 is about 47429.4417740711. The cubic root of 2249551947 is about 1310.2837112529.

The spelling of 2249551947 in words is "two billion, two hundred forty-nine million, five hundred fifty-one thousand, nine hundred forty-seven".