40223817 has 32 divisors (see below), whose sum is σ = 63504000. Its totient is φ = 25090560.

The previous prime is 40223789. The next prime is 40223831. The reversal of 40223817 is 71832204.

It is not a de Polignac number, because 40223817 - 2¹² = 40219721 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (40223837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45217 + ... + 46097.

It is an arithmetic number, because the mean of its divisors is an integer number (1984500).

Almost surely, 2^40223817 is an apocalyptic number.

It is an amenable number.

40223817 is a deficient number, since it is larger than the sum of its proper divisors (23280183).

40223817 is a wasteful number, since it uses less digits than its factorization.

40223817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40223817 is about 6342.2249250559. The cubic root of 40223817 is about 342.6318727804.

The spelling of 40223817 in words is "forty million, two hundred twenty-three thousand, eight hundred seventeen".