40336397 has 4 divisors (see below), whose sum is σ = 40561920. Its totient is φ = 40110876.

The previous prime is 40336379. The next prime is 40336409. The reversal of 40336397 is 79363304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40336397 - 2²⁴ = 23559181 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 (40336897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112493 + ... + 112850.

It is an arithmetic number, because the mean of its divisors is an integer number (10140480).

Almost surely, 2^40336397 is an apocalyptic number.

It is an amenable number.

40336397 is a deficient number, since it is larger than the sum of its proper divisors (225523).

40336397 is a wasteful number, since it uses less digits than its factorization.

40336397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225522.

The product of its (nonzero) digits is 40824, while the sum is 35.

The square root of 40336397 is about 6351.0941577023. The cubic root of 40336397 is about 342.9512322044.

The spelling of 40336397 in words is "forty million, three hundred thirty-six thousand, three hundred ninety-seven".