45039646 has 8 divisors (see below), whose sum is σ = 67804200. Its totient is φ = 22438248.

The previous prime is 45039641. The next prime is 45039703. The reversal of 45039646 is 64693054.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45039641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40096 + ... + 41203.

It is an arithmetic number, because the mean of its divisors is an integer number (8475525).

Almost surely, 2^45039646 is an apocalyptic number.

45039646 is a deficient number, since it is larger than the sum of its proper divisors (22764554).

45039646 is a wasteful number, since it uses less digits than its factorization.

45039646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81578.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 45039646 is about 6711.1583202902. The cubic root of 45039646 is about 355.7937565226.

The spelling of 45039646 in words is "forty-five million, thirty-nine thousand, six hundred forty-six".