445623899 has 8 divisors (see below), whose sum is σ = 510402528. Its totient is φ = 381124800.

The previous prime is 445623887. The next prime is 445623949. The reversal of 445623899 is 998326544.

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

It is not a de Polignac number, because 445623899 - 2⁴ = 445623883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445623859) 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, 66452 + ... + 72849.

It is an arithmetic number, because the mean of its divisors is an integer number (63800316).

Almost surely, 2^445623899 is an apocalyptic number.

445623899 is a deficient number, since it is larger than the sum of its proper divisors (64778629).

445623899 is a wasteful number, since it uses less digits than its factorization.

445623899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139765.

The product of its digits is 1866240, while the sum is 50.

The square root of 445623899 is about 21109.8057546724. The cubic root of 445623899 is about 763.8173013017.

The spelling of 445623899 in words is "four hundred forty-five million, six hundred twenty-three thousand, eight hundred ninety-nine".