45203989 has 8 divisors (see below), whose sum is σ = 46925568. Its totient is φ = 43514160.

The previous prime is 45203959. The next prime is 45204023. The reversal of 45203989 is 98930254.

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 45203989 - 2⁵ = 45203957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45203909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5017 + ... + 10750.

It is an arithmetic number, because the mean of its divisors is an integer number (5865696).

Almost surely, 2^45203989 is an apocalyptic number.

It is an amenable number.

45203989 is a deficient number, since it is larger than the sum of its proper divisors (1721579).

45203989 is a wasteful number, since it uses less digits than its factorization.

45203989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15875.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 45203989 is about 6723.3911830266. The cubic root of 45203989 is about 356.2259774917.

The spelling of 45203989 in words is "forty-five million, two hundred three thousand, nine hundred eighty-nine".