450904981 has 4 divisors (see below), whose sum is σ = 460498752. Its totient is φ = 441311212.

The previous prime is 450904967. The next prime is 450904997. The reversal of 450904981 is 189409054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 450904981 - 2⁹ = 450904469 is a prime.

It is a super-2 number, since 2×450904981² = 406630603781220722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450904901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4796815 + ... + 4796908.

It is an arithmetic number, because the mean of its divisors is an integer number (115124688).

Almost surely, 2^450904981 is an apocalyptic number.

It is an amenable number.

450904981 is a deficient number, since it is larger than the sum of its proper divisors (9593771).

450904981 is an equidigital number, since it uses as much as digits as its factorization.

450904981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9593770.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 450904981 is about 21234.5233287682. The cubic root of 450904981 is about 766.8227887684.

The spelling of 450904981 in words is "four hundred fifty million, nine hundred four thousand, nine hundred eighty-one".