247498897 has 4 divisors (see below), whose sum is σ = 247599216. Its totient is φ = 247398580.

The previous prime is 247498873. The next prime is 247498913. The reversal of 247498897 is 798894742.

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.

It is a cyclic number.

It is not a de Polignac number, because 247498897 - 2¹¹ = 247496849 is a prime.

It is a super-2 number, since 2×247498897² = 122511408032433218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247498297) 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, 46363 + ... + 51424.

It is an arithmetic number, because the mean of its divisors is an integer number (61899804).

Almost surely, 2^247498897 is an apocalyptic number.

It is an amenable number.

247498897 is a deficient number, since it is larger than the sum of its proper divisors (100319).

247498897 is an equidigital number, since it uses as much as digits as its factorization.

247498897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100318.

The product of its digits is 8128512, while the sum is 58.

The square root of 247498897 is about 15732.0976668720. The cubic root of 247498897 is about 627.8526851303.

The spelling of 247498897 in words is "two hundred forty-seven million, four hundred ninety-eight thousand, eight hundred ninety-seven".