40472297 has 2 divisors, whose sum is σ = 40472298. Its totient is φ = 40472296.

The previous prime is 40472279. The next prime is 40472303. The reversal of 40472297 is 79227404.

It is a happy number.

Together with previous prime (40472279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22316176 + 18156121 = 4724^2 + 4261^2 .

It is a cyclic number.

It is not a de Polignac number, because 40472297 - 2⁸ = 40472041 is a prime.

It is not a weakly prime, because it can be changed into another prime (40472227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20236148 + 20236149.

It is an arithmetic number, because the mean of its divisors is an integer number (20236149).

Almost surely, 2^40472297 is an apocalyptic number.

It is an amenable number.

40472297 is a deficient number, since it is larger than the sum of its proper divisors (1).

40472297 is an equidigital number, since it uses as much as digits as its factorization.

40472297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 40472297 is about 6361.7841051076. The cubic root of 40472297 is about 343.3359536252.

The spelling of 40472297 in words is "forty million, four hundred seventy-two thousand, two hundred ninety-seven".