450280690 has 8 divisors (see below), whose sum is σ = 810505260. Its totient is φ = 180112272.

The previous prime is 450280681. The next prime is 450280703. The reversal of 450280690 is 96082054.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 407757249 + 42523441 = 20193^2 + 6521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×450280690² = 405505399573752200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22514025 + ... + 22514044.

Almost surely, 2^450280690 is an apocalyptic number.

450280690 is a deficient number, since it is larger than the sum of its proper divisors (360224570).

450280690 is a wasteful number, since it uses less digits than its factorization.

450280690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45028076.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 450280690 is about 21219.8183309848. The cubic root of 450280690 is about 766.4687291993.

The spelling of 450280690 in words is "four hundred fifty million, two hundred eighty thousand, six hundred ninety".