45438989 has 8 divisors (see below), whose sum is σ = 46552320. Its totient is φ = 44331856.

The previous prime is 45438979. The next prime is 45439067. The reversal of 45438989 is 98983454.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 45438989 - 2⁴ = 45438973 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45438929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15527 + ... + 18219.

It is an arithmetic number, because the mean of its divisors is an integer number (5819040).

Almost surely, 2^45438989 is an apocalyptic number.

It is an amenable number.

45438989 is a deficient number, since it is larger than the sum of its proper divisors (1113331).

45438989 is a wasteful number, since it uses less digits than its factorization.

45438989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099.

The product of its digits is 1244160, while the sum is 50.

The square root of 45438989 is about 6740.8448283579. The cubic root of 45438989 is about 356.8422096640.

The spelling of 45438989 in words is "forty-five million, four hundred thirty-eight thousand, nine hundred eighty-nine".