40228799 has 4 divisors (see below), whose sum is σ = 43323336. Its totient is φ = 37134264.

The previous prime is 40228789. The next prime is 40228807. The reversal of 40228799 is 99782204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40228799 - 2²⁴ = 23451583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40228709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547249 + ... + 1547274.

It is an arithmetic number, because the mean of its divisors is an integer number (10830834).

Almost surely, 2^40228799 is an apocalyptic number.

40228799 is a deficient number, since it is larger than the sum of its proper divisors (3094537).

40228799 is a wasteful number, since it uses less digits than its factorization.

40228799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094536.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 40228799 is about 6342.6176772686. The cubic root of 40228799 is about 342.6460179780.

It can be divided in two parts, 4022 and 8799, that added together give a palindrome (12821).

The spelling of 40228799 in words is "forty million, two hundred twenty-eight thousand, seven hundred ninety-nine".