45421899 has 8 divisors (see below), whose sum is σ = 61187280. Its totient is φ = 29968896.

The previous prime is 45421879. The next prime is 45421927. The reversal of 45421899 is 99812454.

45421899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 45421899 - 2⁷ = 45421771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45421899.

It is not an unprimeable number, because it can be changed into a prime (45421879) 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 in 7 ways as a sum of consecutive naturals, for example, 77754 + ... + 78335.

It is an arithmetic number, because the mean of its divisors is an integer number (7648410).

Almost surely, 2^45421899 is an apocalyptic number.

45421899 is a deficient number, since it is larger than the sum of its proper divisors (15765381).

45421899 is a wasteful number, since it uses less digits than its factorization.

45421899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156189.

The product of its digits is 103680, while the sum is 42.

The square root of 45421899 is about 6739.5770638817. The cubic root of 45421899 is about 356.7974668985.

It can be divided in two parts, 4542 and 1899, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 45421899 in words is "forty-five million, four hundred twenty-one thousand, eight hundred ninety-nine".