45421999 has 8 divisors (see below), whose sum is σ = 52536960. Its totient is φ = 38463576.

The previous prime is 45421991. The next prime is 45422009. The reversal of 45421999 is 99912454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45421999 - 2³ = 45421991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45421991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38509 + ... + 39670.

It is an arithmetic number, because the mean of its divisors is an integer number (6567120).

Almost surely, 2^45421999 is an apocalyptic number.

45421999 is a deficient number, since it is larger than the sum of its proper divisors (7114961).

45421999 is an equidigital number, since it uses as much as digits as its factorization.

45421999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78269.

The product of its digits is 116640, while the sum is 43.

The square root of 45421999 is about 6739.5844827408. The cubic root of 45421999 is about 356.7977287379.

The spelling of 45421999 in words is "forty-five million, four hundred twenty-one thousand, nine hundred ninety-nine".