247164494 has 4 divisors (see below), whose sum is σ = 370746744. Its totient is φ = 123582246.

The previous prime is 247164487. The next prime is 247164499. The reversal of 247164494 is 494461742.

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

It is a super-2 number, since 2×247164494² = 122180574188552072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247164499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61791122 + ... + 61791125.

It is an arithmetic number, because the mean of its divisors is an integer number (92686686).

Almost surely, 2^247164494 is an apocalyptic number.

247164494 is a deficient number, since it is larger than the sum of its proper divisors (123582250).

247164494 is a wasteful number, since it uses less digits than its factorization.

247164494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123582249.

The product of its digits is 193536, while the sum is 41.

The square root of 247164494 is about 15721.4660257878. The cubic root of 247164494 is about 627.5697876383.

The spelling of 247164494 in words is "two hundred forty-seven million, one hundred sixty-four thousand, four hundred ninety-four".