40297927 has 2 divisors, whose sum is σ = 40297928. Its totient is φ = 40297926.

The previous prime is 40297919. The next prime is 40297949. The reversal of 40297927 is 72979204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40297927 - 2³ = 40297919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40297927.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40297997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20148963 + 20148964.

It is an arithmetic number, because the mean of its divisors is an integer number (20148964).

Almost surely, 2^40297927 is an apocalyptic number.

40297927 is a deficient number, since it is larger than the sum of its proper divisors (1).

40297927 is an equidigital number, since it uses as much as digits as its factorization.

40297927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 40297927 is about 6348.0648232355. The cubic root of 40297927 is about 342.8421699893.

The spelling of 40297927 in words is "forty million, two hundred ninety-seven thousand, nine hundred twenty-seven".