247929379 has 4 divisors (see below), whose sum is σ = 250246584. Its totient is φ = 245612176.

The previous prime is 247929359. The next prime is 247929403. The reversal of 247929379 is 973929742.

247929379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 973929742 = 2 ⋅486964871.

It is a cyclic number.

It is not a de Polignac number, because 247929379 - 2²¹ = 245832227 is a prime.

It is a super-2 number, since 2×247929379² = 122937953942651282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247929359) 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, 1158442 + ... + 1158655.

It is an arithmetic number, because the mean of its divisors is an integer number (62561646).

Almost surely, 2^247929379 is an apocalyptic number.

247929379 is a deficient number, since it is larger than the sum of its proper divisors (2317205).

247929379 is a wasteful number, since it uses less digits than its factorization.

247929379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317204.

The product of its digits is 1714608, while the sum is 52.

The square root of 247929379 is about 15745.7733693839. The cubic root of 247929379 is about 628.2164884072.

The spelling of 247929379 in words is "two hundred forty-seven million, nine hundred twenty-nine thousand, three hundred seventy-nine".