45099999 has 12 divisors (see below), whose sum is σ = 74450896. Its totient is φ = 25771392.

The previous prime is 45099973. The next prime is 45100007. The reversal of 45099999 is 99999054.

It is a happy number.

It is not a de Polignac number, because 45099999 - 2⁷ = 45099871 is a prime.

It is a Duffinian number.

45099999 is a modest number, since divided by 9999 gives 4509 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45099919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357874 + ... + 357999.

Almost surely, 2^45099999 is an apocalyptic number.

45099999 is a deficient number, since it is larger than the sum of its proper divisors (29350897).

45099999 is a wasteful number, since it uses less digits than its factorization.

45099999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715886 (or 715883 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 54.

The square root of 45099999 is about 6715.6532816994. The cubic root of 45099999 is about 355.9526064713.

The spelling of 45099999 in words is "forty-five million, ninety-nine thousand, nine hundred ninety-nine".