90838757 has 2 divisors, whose sum is σ = 90838758. Its totient is φ = 90838756.

The previous prime is 90838751. The next prime is 90838763. The reversal of 90838757 is 75783809.

It is a balanced prime because it is at equal distance from previous prime (90838751) and next prime (90838763).

It can be written as a sum of positive squares in only one way, i.e., 90364036 + 474721 = 9506^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 90838757 - 2¹² = 90834661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90838751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45419378 + 45419379.

It is an arithmetic number, because the mean of its divisors is an integer number (45419379).

Almost surely, 2^90838757 is an apocalyptic number.

It is an amenable number.

90838757 is a deficient number, since it is larger than the sum of its proper divisors (1).

90838757 is an equidigital number, since it uses as much as digits as its factorization.

90838757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 90838757 is about 9530.9368374783. The cubic root of 90838757 is about 449.5283238834.

The spelling of 90838757 in words is "ninety million, eight hundred thirty-eight thousand, seven hundred fifty-seven".