45539969 has 4 divisors (see below), whose sum is σ = 45586644. Its totient is φ = 45493296.

The previous prime is 45539953. The next prime is 45539987. The reversal of 45539969 is 96993554.

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 40157569 + 5382400 = 6337^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 45539969 - 2⁴ = 45539953 is a prime.

It is a super-3 number, since 3×45539969³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45539369) 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, 21842 + ... + 23835.

It is an arithmetic number, because the mean of its divisors is an integer number (11396661).

Almost surely, 2^45539969 is an apocalyptic number.

It is an amenable number.

45539969 is a deficient number, since it is larger than the sum of its proper divisors (46675).

45539969 is an equidigital number, since it uses as much as digits as its factorization.

45539969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46674.

The product of its digits is 1312200, while the sum is 50.

The square root of 45539969 is about 6748.3308306573. The cubic root of 45539969 is about 357.1063533510.

The spelling of 45539969 in words is "forty-five million, five hundred thirty-nine thousand, nine hundred sixty-nine".