45049999 has 4 divisors (see below), whose sum is σ = 45152136. Its totient is φ = 44947864.

The previous prime is 45049973. The next prime is 45050011. The reversal of 45049999 is 99994054.

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

It is a cyclic number.

It is not a de Polignac number, because 45049999 - 2⁷ = 45049871 is a prime.

It is a Duffinian number.

45049999 is a modest number, since divided by 9999 gives 4504 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45049909) 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, 50404 + ... + 51289.

It is an arithmetic number, because the mean of its divisors is an integer number (11288034).

Almost surely, 2^45049999 is an apocalyptic number.

45049999 is a deficient number, since it is larger than the sum of its proper divisors (102137).

45049999 is a wasteful number, since it uses less digits than its factorization.

45049999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102136.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 45049999 is about 6711.9296033257. The cubic root of 45049999 is about 355.8210158440.

The spelling of 45049999 in words is "forty-five million, forty-nine thousand, nine hundred ninety-nine".