440215899 has 16 divisors (see below), whose sum is σ = 604050432. Its totient is φ = 284961888.

The previous prime is 440215877. The next prime is 440215913. The reversal of 440215899 is 998512044.

It is not a de Polignac number, because 440215899 - 2¹⁶ = 440150363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440215899.

It is not an unprimeable number, because it can be changed into a prime (440215819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54262 + ... + 61844.

It is an arithmetic number, because the mean of its divisors is an integer number (37753152).

Almost surely, 2^440215899 is an apocalyptic number.

440215899 is a deficient number, since it is larger than the sum of its proper divisors (163834533).

440215899 is a wasteful number, since it uses less digits than its factorization.

440215899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8146.

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

The square root of 440215899 is about 20981.3226227519. The cubic root of 440215899 is about 760.7148738763.

It can be divided in two parts, 4402 and 15899, that added together give a triangular number (20301 = T₂₀₁).

The spelling of 440215899 in words is "four hundred forty million, two hundred fifteen thousand, eight hundred ninety-nine".