454239979 has 2 divisors, whose sum is σ = 454239980. Its totient is φ = 454239978.

The previous prime is 454239889. The next prime is 454240019. The reversal of 454239979 is 979932454.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 454239979 - 2¹⁵ = 454207211 is a prime.

It is not a weakly prime, because it can be changed into another prime (454231979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227119989 + 227119990.

It is an arithmetic number, because the mean of its divisors is an integer number (227119990).

Almost surely, 2^454239979 is an apocalyptic number.

454239979 is a deficient number, since it is larger than the sum of its proper divisors (1).

454239979 is an equidigital number, since it uses as much as digits as its factorization.

454239979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 52.

The square root of 454239979 is about 21312.9063949523. The cubic root of 454239979 is about 768.7086800538.

It can be divided in two parts, 4542 and 39979, that added together give a square (44521 = 211²).

The spelling of 454239979 in words is "four hundred fifty-four million, two hundred thirty-nine thousand, nine hundred seventy-nine".