40699668 has 12 divisors (see below), whose sum is σ = 94965920. Its totient is φ = 13566552.

The previous prime is 40699663. The next prime is 40699669. The reversal of 40699668 is 86699604.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40699661) 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 3 ways as a sum of consecutive naturals, for example, 1695808 + ... + 1695831.

Almost surely, 2^40699668 is an apocalyptic number.

It is an amenable number.

40699668 is an abundant number, since it is smaller than the sum of its proper divisors (54266252).

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

40699668 is a wasteful number, since it uses less digits than its factorization.

40699668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391646 (or 3391644 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 40699668 is about 6379.6291428264. The cubic root of 40699668 is about 343.9777004654.

The spelling of 40699668 in words is "forty million, six hundred ninety-nine thousand, six hundred sixty-eight".