247392393 has 32 divisors (see below), whose sum is σ = 356762880. Its totient is φ = 152106240.

The previous prime is 247392367. The next prime is 247392427. The reversal of 247392393 is 393293742.

It is a happy number.

It is not a de Polignac number, because 247392393 - 2²⁶ = 180283529 is a prime.

It is a super-2 number, since 2×247392393² = 122405992228532898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247392193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222523 + ... + 223631.

It is an arithmetic number, because the mean of its divisors is an integer number (11148840).

Almost surely, 2^247392393 is an apocalyptic number.

247392393 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

247392393 is a deficient number, since it is larger than the sum of its proper divisors (109370487).

247392393 is a wasteful number, since it uses less digits than its factorization.

247392393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249.

The product of its digits is 244944, while the sum is 42.

The square root of 247392393 is about 15728.7123757795. The cubic root of 247392393 is about 627.7626127876.

The spelling of 247392393 in words is "two hundred forty-seven million, three hundred ninety-two thousand, three hundred ninety-three".