247940794 has 4 divisors (see below), whose sum is σ = 371911194. Its totient is φ = 123970396.

The previous prime is 247940779. The next prime is 247940809. The reversal of 247940794 is 497049742.

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

It is an interprime number because it is at equal distance from previous prime (247940779) and next prime (247940809).

It can be written as a sum of positive squares in only one way, i.e., 181306225 + 66634569 = 13465^2 + 8163^2 .

It is a super-2 number, since 2×247940794² = 122949274658700872, 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, 61985197 + ... + 61985200.

Almost surely, 2^247940794 is an apocalyptic number.

247940794 is a deficient number, since it is larger than the sum of its proper divisors (123970400).

247940794 is a wasteful number, since it uses less digits than its factorization.

247940794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123970399.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 247940794 is about 15746.1358434379. The cubic root of 247940794 is about 628.2261295682.

The spelling of 247940794 in words is "two hundred forty-seven million, nine hundred forty thousand, seven hundred ninety-four".