40506197 has 4 divisors (see below), whose sum is σ = 42267360. Its totient is φ = 38745036.

The previous prime is 40506173. The next prime is 40506199. The reversal of 40506197 is 79160504.

It is a happy number.

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 40506197 - 2¹⁰ = 40505173 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 (40506199) 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, 880547 + ... + 880592.

It is an arithmetic number, because the mean of its divisors is an integer number (10566840).

Almost surely, 2^40506197 is an apocalyptic number.

It is an amenable number.

40506197 is a deficient number, since it is larger than the sum of its proper divisors (1761163).

40506197 is a wasteful number, since it uses less digits than its factorization.

40506197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761162.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 40506197 is about 6364.4478943582. The cubic root of 40506197 is about 343.4317874138.

The spelling of 40506197 in words is "forty million, five hundred six thousand, one hundred ninety-seven".