454840979 has 2 divisors, whose sum is σ = 454840980. Its totient is φ = 454840978.

The previous prime is 454840927. The next prime is 454841029. The reversal of 454840979 is 979048454.

It is an a-pointer prime, because the next prime (454841029) can be obtained adding 454840979 to its sum of digits (50).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 454840979 - 2¹² = 454836883 is a prime.

It is not a weakly prime, because it can be changed into another prime (454840909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227420489 + 227420490.

It is an arithmetic number, because the mean of its divisors is an integer number (227420490).

Almost surely, 2^454840979 is an apocalyptic number.

454840979 is a deficient number, since it is larger than the sum of its proper divisors (1).

454840979 is an equidigital number, since it uses as much as digits as its factorization.

454840979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 454840979 is about 21327.0011722230. The cubic root of 454840979 is about 769.0475540225.

Subtracting from 454840979 its sum of digits (50), we obtain a square (454840929 = 21327²).

The spelling of 454840979 in words is "four hundred fifty-four million, eight hundred forty thousand, nine hundred seventy-nine".