90236427829 has 2 divisors, whose sum is σ = 90236427830. Its totient is φ = 90236427828.

The previous prime is 90236427823. The next prime is 90236427847. The reversal of 90236427829 is 92872463209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82312757604 + 7923670225 = 286902^2 + 89015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90236427829 is a prime.

It is a super-2 number, since 2×90236427829² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90236427823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45118213914 + 45118213915.

It is an arithmetic number, because the mean of its divisors is an integer number (45118213915).

Almost surely, 2^90236427829 is an apocalyptic number.

It is an amenable number.

90236427829 is a deficient number, since it is larger than the sum of its proper divisors (1).

90236427829 is an equidigital number, since it uses as much as digits as its factorization.

90236427829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 90236427829 in words is "ninety billion, two hundred thirty-six million, four hundred twenty-seven thousand, eight hundred twenty-nine".