40971738 has 8 divisors (see below), whose sum is σ = 81943488. Its totient is φ = 13657244.

The previous prime is 40971727. The next prime is 40971743. The reversal of 40971738 is 83717904.

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

40971738 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 40971696 and 40971705.

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, 3414306 + ... + 3414317.

It is an arithmetic number, because the mean of its divisors is an integer number (10242936).

Almost surely, 2^40971738 is an apocalyptic number.

40971738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40971738 is a wasteful number, since it uses less digits than its factorization.

40971738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6828628.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 40971738 is about 6400.9169655605. The cubic root of 40971738 is about 344.7424753258.

The spelling of 40971738 in words is "forty million, nine hundred seventy-one thousand, seven hundred thirty-eight".