40161946 has 16 divisors (see below), whose sum is σ = 67497120. Its totient is φ = 17761680.

The previous prime is 40161889. The next prime is 40161959. The reversal of 40161946 is 64916104.

It is a super-2 number, since 2×40161946² = 3225963813013832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23856 + ... + 25483.

It is an arithmetic number, because the mean of its divisors is an integer number (4218570).

Almost surely, 2^40161946 is an apocalyptic number.

40161946 is a deficient number, since it is larger than the sum of its proper divisors (27335174).

40161946 is a wasteful number, since it uses less digits than its factorization.

40161946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49389.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 40161946 is about 6337.3453432806. The cubic root of 40161946 is about 342.4561074696.

The spelling of 40161946 in words is "forty million, one hundred sixty-one thousand, nine hundred forty-six".