45099919 has 2 divisors, whose sum is σ = 45099920. Its totient is φ = 45099918.

The previous prime is 45099893. The next prime is 45099953. The reversal of 45099919 is 91999054.

45099919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45099919 - 2¹³ = 45091727 is a prime.

It is a super-2 number, since 2×45099919² = 4068005387613122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45099319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22549959 + 22549960.

It is an arithmetic number, because the mean of its divisors is an integer number (22549960).

Almost surely, 2^45099919 is an apocalyptic number.

45099919 is a deficient number, since it is larger than the sum of its proper divisors (1).

45099919 is an equidigital number, since it uses as much as digits as its factorization.

45099919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 46.

The square root of 45099919 is about 6715.6473254631. The cubic root of 45099919 is about 355.9523960040.

The spelling of 45099919 in words is "forty-five million, ninety-nine thousand, nine hundred nineteen".