40290847 has 2 divisors, whose sum is σ = 40290848. Its totient is φ = 40290846.

The previous prime is 40290841. The next prime is 40290883. The reversal of 40290847 is 74809204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40290847 - 2¹⁵ = 40258079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40290841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20145423 + 20145424.

It is an arithmetic number, because the mean of its divisors is an integer number (20145424).

Almost surely, 2^40290847 is an apocalyptic number.

40290847 is a deficient number, since it is larger than the sum of its proper divisors (1).

40290847 is an equidigital number, since it uses as much as digits as its factorization.

40290847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 40290847 is about 6347.5071484796. The cubic root of 40290847 is about 342.8220906708.

The spelling of 40290847 in words is "forty million, two hundred ninety thousand, eight hundred forty-seven".