40087297 has 2 divisors, whose sum is σ = 40087298. Its totient is φ = 40087296.

The previous prime is 40087277. The next prime is 40087339. The reversal of 40087297 is 79278004.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25310961 + 14776336 = 5031^2 + 3844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40087297 is a prime.

It is not a weakly prime, because it can be changed into another prime (40087237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20043648 + 20043649.

It is an arithmetic number, because the mean of its divisors is an integer number (20043649).

Almost surely, 2^40087297 is an apocalyptic number.

It is an amenable number.

40087297 is a deficient number, since it is larger than the sum of its proper divisors (1).

40087297 is an equidigital number, since it uses as much as digits as its factorization.

40087297 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 37.

The square root of 40087297 is about 6331.4529927972. The cubic root of 40087297 is about 342.2438015142.

The spelling of 40087297 in words is "forty million, eighty-seven thousand, two hundred ninety-seven".