4450621490 has 24 divisors (see below), whose sum is σ = 9319057452. Its totient is φ = 1525927200.

The previous prime is 4450621481. The next prime is 4450621493. The reversal of 4450621490 is 941260544.

It can be written as a sum of positive squares in 2 ways, for example, as 4130247289 + 320374201 = 64267^2 + 17899^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4450621490.

It is not an unprimeable number, because it can be changed into a prime (4450621493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4540961 + ... + 4541940.

Almost surely, 2^4450621490 is an apocalyptic number.

4450621490 is an abundant number, since it is smaller than the sum of its proper divisors (4868435962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4450621490 is a wasteful number, since it uses less digits than its factorization.

4450621490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9082922 (or 9082915 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 4450621490 is about 66712.9784224929. The cubic root of 4450621490 is about 1644.9027254989.

The spelling of 4450621490 in words is "four billion, four hundred fifty million, six hundred twenty-one thousand, four hundred ninety".