40008953 has 2 divisors, whose sum is σ = 40008954. Its totient is φ = 40008952.

The previous prime is 40008949. The next prime is 40008959. The reversal of 40008953 is 35980004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39790864 + 218089 = 6308^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 40008953 - 2² = 40008949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40008959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20004476 + 20004477.

It is an arithmetic number, because the mean of its divisors is an integer number (20004477).

Almost surely, 2^40008953 is an apocalyptic number.

It is an amenable number.

40008953 is a deficient number, since it is larger than the sum of its proper divisors (1).

40008953 is an equidigital number, since it uses as much as digits as its factorization.

40008953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40008953 is about 6325.2630775328. The cubic root of 40008953 is about 342.0207031230.

Adding to 40008953 its reverse (35980004), we get a palindrome (75988957).

The spelling of 40008953 in words is "forty million, eight thousand, nine hundred fifty-three".