40384917 has 6 divisors (see below), whose sum is σ = 58333782. Its totient is φ = 26923272.

The previous prime is 40384913. The next prime is 40384963. The reversal of 40384917 is 71948304.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27468081 + 12916836 = 5241^2 + 3594^2 .

It is not a de Polignac number, because 40384917 - 2² = 40384913 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40384913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2243598 + ... + 2243615.

It is an arithmetic number, because the mean of its divisors is an integer number (9722297).

Almost surely, 2^40384917 is an apocalyptic number.

It is an amenable number.

40384917 is a deficient number, since it is larger than the sum of its proper divisors (17948865).

40384917 is a wasteful number, since it uses less digits than its factorization.

40384917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487219 (or 4487216 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 40384917 is about 6354.9128239497. The cubic root of 40384917 is about 343.0886872697.

The spelling of 40384917 in words is "forty million, three hundred eighty-four thousand, nine hundred seventeen".