3890744450 has 12 divisors (see below), whose sum is σ = 7236784770. Its totient is φ = 1556297760.

The previous prime is 3890744419. The next prime is 3890744461. The reversal of 3890744450 is 544470983.

It can be written as a sum of positive squares in 3 ways, for example, as 1605043969 + 2285700481 = 40063^2 + 47809^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38907395 + ... + 38907494.

Almost surely, 2^3890744450 is an apocalyptic number.

3890744450 is a deficient number, since it is larger than the sum of its proper divisors (3346040320).

3890744450 is a wasteful number, since it uses less digits than its factorization.

3890744450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77814901 (or 77814896 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 3890744450 is about 62375.8322589767. The cubic root of 3890744450 is about 1572.8147337498.

The spelling of 3890744450 in words is "three billion, eight hundred ninety million, seven hundred forty-four thousand, four hundred fifty".