40961938 has 4 divisors (see below), whose sum is σ = 61442910. Its totient is φ = 20480968.

The previous prime is 40961933. The next prime is 40961953. The reversal of 40961938 is 83916904.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 31058329 + 9903609 = 5573^2 + 3147^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 40961938.

It is not an unprimeable number, because it can be changed into a prime (40961933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10240483 + ... + 10240486.

Almost surely, 2^40961938 is an apocalyptic number.

40961938 is a deficient number, since it is larger than the sum of its proper divisors (20480972).

40961938 is a wasteful number, since it uses less digits than its factorization.

40961938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20480971.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 40961938 is about 6400.1514044591. The cubic root of 40961938 is about 344.7149869006.

The spelling of 40961938 in words is "forty million, nine hundred sixty-one thousand, nine hundred thirty-eight".