444672405 has 24 divisors (see below), whose sum is σ = 787168512. Its totient is φ = 232111584.

The previous prime is 444672377. The next prime is 444672413. The reversal of 444672405 is 504276444.

It is not a de Polignac number, because 444672405 - 2¹⁴ = 444656021 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 444672405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103009 + ... + 107238.

It is an arithmetic number, because the mean of its divisors is an integer number (32798688).

Almost surely, 2^444672405 is an apocalyptic number.

444672405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

444672405 is a deficient number, since it is larger than the sum of its proper divisors (342496107).

444672405 is a wasteful number, since it uses less digits than its factorization.

444672405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210305 (or 210302 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 36.

The square root of 444672405 is about 21087.2569339874. The cubic root of 444672405 is about 763.2732809152.

The spelling of 444672405 in words is "four hundred forty-four million, six hundred seventy-two thousand, four hundred five".