40396277 has 2 divisors, whose sum is σ = 40396278. Its totient is φ = 40396276.

The previous prime is 40396271. The next prime is 40396289. The reversal of 40396277 is 77269304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32364721 + 8031556 = 5689^2 + 2834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40396277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40396277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40396271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20198138 + 20198139.

It is an arithmetic number, because the mean of its divisors is an integer number (20198139).

Almost surely, 2^40396277 is an apocalyptic number.

It is an amenable number.

40396277 is a deficient number, since it is larger than the sum of its proper divisors (1).

40396277 is an equidigital number, since it uses as much as digits as its factorization.

40396277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 40396277 is about 6355.8065577864. The cubic root of 40396277 is about 343.1208537515.

The spelling of 40396277 in words is "forty million, three hundred ninety-six thousand, two hundred seventy-seven".