45339989 has 4 divisors (see below), whose sum is σ = 45369324. Its totient is φ = 45310656.

The previous prime is 45339971. The next prime is 45339991. The reversal of 45339989 is 98993354.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 917764 + 44422225 = 958^2 + 6665^2 .

It is a cyclic number.

It is not a de Polignac number, because 45339989 - 2⁸ = 45339733 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 (45339919) 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, 12212 + ... + 15485.

It is an arithmetic number, because the mean of its divisors is an integer number (11342331).

Almost surely, 2^45339989 is an apocalyptic number.

It is an amenable number.

45339989 is a deficient number, since it is larger than the sum of its proper divisors (29335).

45339989 is a wasteful number, since it uses less digits than its factorization.

45339989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29334.

The product of its digits is 1049760, while the sum is 50.

The square root of 45339989 is about 6733.4975310013. The cubic root of 45339989 is about 356.5828650857.

The spelling of 45339989 in words is "forty-five million, three hundred thirty-nine thousand, nine hundred eighty-nine".