450090031 has 4 divisors (see below), whose sum is σ = 473779000. Its totient is φ = 426401064.

The previous prime is 450090029. The next prime is 450090049. The reversal of 450090031 is 130090054.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 450090031 - 2¹ = 450090029 is a prime.

It is a super-2 number, since 2×450090031² = 405162072011161922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 450089984 and 450090011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450090131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11844456 + ... + 11844493.

It is an arithmetic number, because the mean of its divisors is an integer number (118444750).

Almost surely, 2^450090031 is an apocalyptic number.

450090031 is a deficient number, since it is larger than the sum of its proper divisors (23688969).

450090031 is a wasteful number, since it uses less digits than its factorization.

450090031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23688968.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 450090031 is about 21215.3253804885. The cubic root of 450090031 is about 766.3605338780.

The spelling of 450090031 in words is "four hundred fifty million, ninety thousand, thirty-one".