40628099 has 4 divisors (see below), whose sum is σ = 42766440. Its totient is φ = 38489760.

The previous prime is 40628087. The next prime is 40628129. The reversal of 40628099 is 99082604.

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 40628099 - 2⁴ = 40628083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40628999) 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, 1069142 + ... + 1069179.

It is an arithmetic number, because the mean of its divisors is an integer number (10691610).

Almost surely, 2^40628099 is an apocalyptic number.

40628099 is a deficient number, since it is larger than the sum of its proper divisors (2138341).

40628099 is a wasteful number, since it uses less digits than its factorization.

40628099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138340.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 40628099 is about 6374.0174929161. The cubic root of 40628099 is about 343.7759577533.

The spelling of 40628099 in words is "forty million, six hundred twenty-eight thousand, ninety-nine".