247924879401 has 4 divisors (see below), whose sum is σ = 330566505872. Its totient is φ = 165283252932.

The previous prime is 247924879393. The next prime is 247924879421. The reversal of 247924879401 is 104978429742.

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 not a de Polignac number, because 247924879401 - 2³ = 247924879393 is a prime.

It is a super-2 number, since 2×247924879401² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247924879421) 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, 41320813231 + ... + 41320813236.

It is an arithmetic number, because the mean of its divisors is an integer number (82641626468).

Almost surely, 2^247924879401 is an apocalyptic number.

It is an amenable number.

247924879401 is a deficient number, since it is larger than the sum of its proper divisors (82641626471).

247924879401 is an equidigital number, since it uses as much as digits as its factorization.

247924879401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82641626470.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 247924879401 in words is "two hundred forty-seven billion, nine hundred twenty-four million, eight hundred seventy-nine thousand, four hundred one".