40164943 has 32 divisors (see below), whose sum is σ = 51752960. Its totient is φ = 30326400.

The previous prime is 40164941. The next prime is 40164947. The reversal of 40164943 is 34946104.

It is not a de Polignac number, because 40164943 - 2¹ = 40164941 is a prime.

It is a super-2 number, since 2×40164943² = 3226445292386498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40164941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265918 + ... + 266068.

It is an arithmetic number, because the mean of its divisors is an integer number (1617280).

Almost surely, 2^40164943 is an apocalyptic number.

40164943 is a deficient number, since it is larger than the sum of its proper divisors (11588017).

40164943 is a wasteful number, since it uses less digits than its factorization.

40164943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 40164943 is about 6337.5817943440. The cubic root of 40164943 is about 342.4646256111.

The spelling of 40164943 in words is "forty million, one hundred sixty-four thousand, nine hundred forty-three".