45476989 has 4 divisors (see below), whose sum is σ = 48152124. Its totient is φ = 42801856.

The previous prime is 45476947. The next prime is 45476993. The reversal of 45476989 is 98967454.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98967454 = 2 ⋅49483727.

It can be written as a sum of positive squares in 2 ways, for example, as 25674489 + 19802500 = 5067^2 + 4450^2 .

It is a cyclic number.

It is not a de Polignac number, because 45476989 - 2¹⁵ = 45444221 is a prime.

It is a super-2 number, since 2×45476989² = 4136313057012242, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45476489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1337542 + ... + 1337575.

It is an arithmetic number, because the mean of its divisors is an integer number (12038031).

Almost surely, 2^45476989 is an apocalyptic number.

It is an amenable number.

45476989 is a deficient number, since it is larger than the sum of its proper divisors (2675135).

45476989 is a wasteful number, since it uses less digits than its factorization.

45476989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675134.

The product of its digits is 2177280, while the sum is 52.

The square root of 45476989 is about 6743.6628771017. The cubic root of 45476989 is about 356.9416560206.

The spelling of 45476989 in words is "forty-five million, four hundred seventy-six thousand, nine hundred eighty-nine".