40672197 has 12 divisors (see below), whose sum is σ = 59355660. Its totient is φ = 26834688.

The previous prime is 40672171. The next prime is 40672207. The reversal of 40672197 is 79127604.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8964036 + 31708161 = 2994^2 + 5631^2 .

It is not a de Polignac number, because 40672197 - 2⁷ = 40672069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40672117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22422 + ... + 24167.

It is an arithmetic number, because the mean of its divisors is an integer number (4946305).

Almost surely, 2^40672197 is an apocalyptic number.

It is an amenable number.

40672197 is a deficient number, since it is larger than the sum of its proper divisors (18683463).

40672197 is a wasteful number, since it uses less digits than its factorization.

40672197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46692 (or 46689 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 40672197 is about 6377.4757545599. The cubic root of 40672197 is about 343.9002916585.

The spelling of 40672197 in words is "forty million, six hundred seventy-two thousand, one hundred ninety-seven".