90853913 has 2 divisors, whose sum is σ = 90853914. Its totient is φ = 90853912.

The previous prime is 90853837. The next prime is 90853951. The reversal of 90853913 is 31935809.

It is an a-pointer prime, because the next prime (90853951) can be obtained adding 90853913 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90478144 + 375769 = 9512^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 90853913 - 2¹² = 90849817 is a prime.

It is not a weakly prime, because it can be changed into another prime (90853993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45426956 + 45426957.

It is an arithmetic number, because the mean of its divisors is an integer number (45426957).

Almost surely, 2^90853913 is an apocalyptic number.

It is an amenable number.

90853913 is a deficient number, since it is larger than the sum of its proper divisors (1).

90853913 is an equidigital number, since it uses as much as digits as its factorization.

90853913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 90853913 is about 9531.7318992930. The cubic root of 90853913 is about 449.5533230234.

The spelling of 90853913 in words is "ninety million, eight hundred fifty-three thousand, nine hundred thirteen".