40158866 has 8 divisors (see below), whose sum is σ = 65714544. Its totient is φ = 18254020.

The previous prime is 40158841. The next prime is 40158869. The reversal of 40158866 is 66885104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40158866² = 3225469036811912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40158869) 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, 912680 + ... + 912723.

It is an arithmetic number, because the mean of its divisors is an integer number (8214318).

Almost surely, 2^40158866 is an apocalyptic number.

40158866 is a deficient number, since it is larger than the sum of its proper divisors (25555678).

40158866 is a wasteful number, since it uses less digits than its factorization.

40158866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825416.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 40158866 is about 6337.1023346637. The cubic root of 40158866 is about 342.4473529819.

The spelling of 40158866 in words is "forty million, one hundred fifty-eight thousand, eight hundred sixty-six".