40986397 has 8 divisors (see below), whose sum is σ = 41956992. Its totient is φ = 40020000.

The previous prime is 40986317. The next prime is 40986403. The reversal of 40986397 is 79368904.

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

It is a cyclic number.

It is not a de Polignac number, because 40986397 - 2¹⁹ = 40462109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40986307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27522 + ... + 28972.

It is an arithmetic number, because the mean of its divisors is an integer number (5244624).

Almost surely, 2^40986397 is an apocalyptic number.

40986397 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

40986397 is a deficient number, since it is larger than the sum of its proper divisors (970595).

40986397 is a wasteful number, since it uses less digits than its factorization.

40986397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 40986397 is about 6402.0619334711. The cubic root of 40986397 is about 344.7835847801.

The spelling of 40986397 in words is "forty million, nine hundred eighty-six thousand, three hundred ninety-seven".