40302197 has 4 divisors (see below), whose sum is σ = 43402380. Its totient is φ = 37202016.

The previous prime is 40302127. The next prime is 40302203. The reversal of 40302197 is 79120304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14485636 + 25816561 = 3806^2 + 5081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40302197 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 (40302127) 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, 1550072 + ... + 1550097.

It is an arithmetic number, because the mean of its divisors is an integer number (10850595).

Almost surely, 2^40302197 is an apocalyptic number.

It is an amenable number.

40302197 is a deficient number, since it is larger than the sum of its proper divisors (3100183).

40302197 is a wasteful number, since it uses less digits than its factorization.

40302197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100182.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 40302197 is about 6348.4011372943. The cubic root of 40302197 is about 342.8542788369.

The spelling of 40302197 in words is "forty million, three hundred two thousand, one hundred ninety-seven".