247449922 has 4 divisors (see below), whose sum is σ = 371174886. Its totient is φ = 123724960.

The previous prime is 247449913. The next prime is 247449941. The reversal of 247449922 is 229944742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 229944742 = 2 ⋅114972371.

It can be written as a sum of positive squares in only one way, i.e., 240901441 + 6548481 = 15521^2 + 2559^2 .

It is a super-2 number, since 2×247449922² = 122462927795612168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61862479 + ... + 61862482.

Almost surely, 2^247449922 is an apocalyptic number.

247449922 is a deficient number, since it is larger than the sum of its proper divisors (123724964).

247449922 is a wasteful number, since it uses less digits than its factorization.

247449922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123724963.

The product of its digits is 290304, while the sum is 43.

The square root of 247449922 is about 15730.5410587176. The cubic root of 247449922 is about 627.8112693044.

The spelling of 247449922 in words is "two hundred forty-seven million, four hundred forty-nine thousand, nine hundred twenty-two".