40244418 has 32 divisors (see below), whose sum is σ = 89752320. Its totient is φ = 13366800.

The previous prime is 40244387. The next prime is 40244441. The reversal of 40244418 is 81444204.

It is a happy number.

40244418 is a `hidden beast` number, since 4 + 0 + 244 + 418 = 666.

It is a super-2 number, since 2×40244418² = 3239226360317448, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40244391 and 40244400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15943 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (2804760).

Almost surely, 2^40244418 is an apocalyptic number.

40244418 is an abundant number, since it is smaller than the sum of its proper divisors (49507902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40244418 is a wasteful number, since it uses less digits than its factorization.

40244418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679 (or 2673 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 40244418 is about 6343.8488317424. The cubic root of 40244418 is about 342.6903568250.

The spelling of 40244418 in words is "forty million, two hundred forty-four thousand, four hundred eighteen".