47722249 has 4 divisors (see below), whose sum is σ = 48737664. Its totient is φ = 46706836.

The previous prime is 47722231. The next prime is 47722253. The reversal of 47722249 is 94222774.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94222774 = 2 ⋅47111387.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47722249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47722219) 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, 507637 + ... + 507730.

It is an arithmetic number, because the mean of its divisors is an integer number (12184416).

Almost surely, 2^47722249 is an apocalyptic number.

It is an amenable number.

47722249 is a deficient number, since it is larger than the sum of its proper divisors (1015415).

47722249 is a wasteful number, since it uses less digits than its factorization.

47722249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015414.

The product of its digits is 56448, while the sum is 37.

The square root of 47722249 is about 6908.1291968231. The cubic root of 47722249 is about 362.7217801002.

It can be divided in two parts, 4772 and 2249, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 47722249 in words is "forty-seven million, seven hundred twenty-two thousand, two hundred forty-nine".