239791423 has 2 divisors, whose sum is σ = 239791424. Its totient is φ = 239791422.

The previous prime is 239791403. The next prime is 239791429. The reversal of 239791423 is 324197932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 239791423 - 2¹³ = 239783231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239791429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119895711 + 119895712.

It is an arithmetic number, because the mean of its divisors is an integer number (119895712).

Almost surely, 2^239791423 is an apocalyptic number.

239791423 is a deficient number, since it is larger than the sum of its proper divisors (1).

239791423 is an equidigital number, since it uses as much as digits as its factorization.

239791423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 239791423 is about 15485.2001278640. The cubic root of 239791423 is about 621.2664220039.

The spelling of 239791423 in words is "two hundred thirty-nine million, seven hundred ninety-one thousand, four hundred twenty-three".