450978331 has 2 divisors, whose sum is σ = 450978332. Its totient is φ = 450978330.

The previous prime is 450978299. The next prime is 450978337. The reversal of 450978331 is 133879054.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 450978331 - 2⁵ = 450978299 is a prime.

It is a super-2 number, since 2×450978331² = 406762910063091122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (450978337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225489165 + 225489166.

It is an arithmetic number, because the mean of its divisors is an integer number (225489166).

Almost surely, 2^450978331 is an apocalyptic number.

450978331 is a deficient number, since it is larger than the sum of its proper divisors (1).

450978331 is an equidigital number, since it uses as much as digits as its factorization.

450978331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 450978331 is about 21236.2503987874. The cubic root of 450978331 is about 766.8643669311.

The spelling of 450978331 in words is "four hundred fifty million, nine hundred seventy-eight thousand, three hundred thirty-one".