40994397 has 8 divisors (see below), whose sum is σ = 60732480. Its totient is φ = 27329580.

The previous prime is 40994389. The next prime is 40994399. The reversal of 40994397 is 79349904.

40994397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40994397 - 2³ = 40994389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40994399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759129 + ... + 759182.

It is an arithmetic number, because the mean of its divisors is an integer number (7591560).

Almost surely, 2^40994397 is an apocalyptic number.

It is an amenable number.

40994397 is a deficient number, since it is larger than the sum of its proper divisors (19738083).

40994397 is a wasteful number, since it uses less digits than its factorization.

40994397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518320 (or 1518314 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 40994397 is about 6402.6867016902. The cubic root of 40994397 is about 344.8060157120.

The spelling of 40994397 in words is "forty million, nine hundred ninety-four thousand, three hundred ninety-seven".