247490923 has 2 divisors, whose sum is σ = 247490924. Its totient is φ = 247490922.

The previous prime is 247490917. The next prime is 247490939. The reversal of 247490923 is 329094742.

247490923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247490923 - 2¹³ = 247482731 is a prime.

It is a super-2 number, since 2×247490923² = 122503513934783858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247490993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123745461 + 123745462.

It is an arithmetic number, because the mean of its divisors is an integer number (123745462).

Almost surely, 2^247490923 is an apocalyptic number.

247490923 is a deficient number, since it is larger than the sum of its proper divisors (1).

247490923 is an equidigital number, since it uses as much as digits as its factorization.

247490923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 247490923 is about 15731.8442339098. The cubic root of 247490923 is about 627.8459422705.

It can be divided in two parts, 24 and 7490923, that added together give a palindrome (7490947).

The spelling of 247490923 in words is "two hundred forty-seven million, four hundred ninety thousand, nine hundred twenty-three".