40397319 has 16 divisors (see below), whose sum is σ = 61912800. Its totient is φ = 26002368.

The previous prime is 40397317. The next prime is 40397323. The reversal of 40397319 is 91379304.

It is not a de Polignac number, because 40397319 - 2¹ = 40397317 is a prime.

It is a super-2 number, since 2×40397319² = 3263886764775522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40397317) 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 in 15 ways as a sum of consecutive naturals, for example, 25014 + ... + 26579.

It is an arithmetic number, because the mean of its divisors is an integer number (3869550).

Almost surely, 2^40397319 is an apocalyptic number.

40397319 is a deficient number, since it is larger than the sum of its proper divisors (21515481).

40397319 is a wasteful number, since it uses less digits than its factorization.

40397319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51631 (or 51625 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 40397319 is about 6355.8885295449. Note that the first 3 decimals coincide. The cubic root of 40397319 is about 343.1238039315.

The spelling of 40397319 in words is "forty million, three hundred ninety-seven thousand, three hundred nineteen".