40247093 has 2 divisors, whose sum is σ = 40247094. Its totient is φ = 40247092.

The previous prime is 40247071. The next prime is 40247113. The reversal of 40247093 is 39074204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29343889 + 10903204 = 5417^2 + 3302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40247093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40247063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20123546 + 20123547.

It is an arithmetic number, because the mean of its divisors is an integer number (20123547).

Almost surely, 2^40247093 is an apocalyptic number.

It is an amenable number.

40247093 is a deficient number, since it is larger than the sum of its proper divisors (1).

40247093 is an equidigital number, since it uses as much as digits as its factorization.

40247093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 40247093 is about 6344.0596623928. The cubic root of 40247093 is about 342.6979494009.

Subtracting from 40247093 its reverse (39074204), we obtain a square (1172889 = 1083²).

The spelling of 40247093 in words is "forty million, two hundred forty-seven thousand, ninety-three".