40557699 has 64 divisors (see below), whose sum is σ = 78382080. Its totient is φ = 20113920.

The previous prime is 40557683. The next prime is 40557709. The reversal of 40557699 is 99675504.

It is a happy number.

40557699 is a `hidden beast` number, since 4 + 0 + 557 + 6 + 99 = 666.

40557699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40557699 - 2⁴ = 40557683 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40557659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41284 + ... + 42254.

It is an arithmetic number, because the mean of its divisors is an integer number (1224720).

Almost surely, 2^40557699 is an apocalyptic number.

40557699 is a deficient number, since it is larger than the sum of its proper divisors (37824381).

40557699 is a wasteful number, since it uses less digits than its factorization.

40557699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 40557699 is about 6368.4926788056. The cubic root of 40557699 is about 343.5772790031.

The spelling of 40557699 in words is "forty million, five hundred fifty-seven thousand, six hundred ninety-nine".