45209984 has 16 divisors (see below), whose sum is σ = 90067020. Its totient is φ = 22604928.

The previous prime is 45209971. The next prime is 45209993. The reversal of 45209984 is 48990254.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 176474 + ... + 176729.

Almost surely, 2^45209984 is an apocalyptic number.

It is an amenable number.

45209984 is a deficient number, since it is larger than the sum of its proper divisors (44857036).

45209984 is an equidigital number, since it uses as much as digits as its factorization.

45209984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353217 (or 353205 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 45209984 is about 6723.8369998090. The cubic root of 45209984 is about 356.2417244820.

The spelling of 45209984 in words is "forty-five million, two hundred nine thousand, nine hundred eighty-four".