40396197 has 4 divisors (see below), whose sum is σ = 53861600. Its totient is φ = 26930796.

The previous prime is 40396177. The next prime is 40396219. The reversal of 40396197 is 79169304.

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 not a de Polignac number, because 40396197 - 2²⁰ = 39347621 is a prime.

It is a super-3 number, since 3×40396197³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40396157) 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, 6732697 + ... + 6732702.

It is an arithmetic number, because the mean of its divisors is an integer number (13465400).

Almost surely, 2^40396197 is an apocalyptic number.

It is an amenable number.

40396197 is a deficient number, since it is larger than the sum of its proper divisors (13465403).

40396197 is a wasteful number, since it uses less digits than its factorization.

40396197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13465402.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 40396197 is about 6355.8002643255. The cubic root of 40396197 is about 343.1206272481.

The spelling of 40396197 in words is "forty million, three hundred ninety-six thousand, one hundred ninety-seven".