40168858 has 8 divisors (see below), whose sum is σ = 63797652. Its totient is φ = 18902976.

The previous prime is 40168819. The next prime is 40168861. The reversal of 40168858 is 85886104.

It can be written as a sum of positive squares in 2 ways, for example, as 39601849 + 567009 = 6293^2 + 753^2 .

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

It is a super-2 number, since 2×40168858² = 3227074306048328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40168858.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590685 + ... + 590752.

Almost surely, 2^40168858 is an apocalyptic number.

40168858 is a deficient number, since it is larger than the sum of its proper divisors (23628794).

40168858 is a wasteful number, since it uses less digits than its factorization.

40168858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181456.

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 40168858 is about 6337.8906585709. The cubic root of 40168858 is about 342.4757522749.

The spelling of 40168858 in words is "forty million, one hundred sixty-eight thousand, eight hundred fifty-eight".