90351942949 has 2 divisors, whose sum is σ = 90351942950. Its totient is φ = 90351942948.

The previous prime is 90351942881. The next prime is 90351942979. The reversal of 90351942949 is 94924915309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88160298724 + 2191644225 = 296918^2 + 46815^2 .

It is a cyclic number.

It is not a de Polignac number, because 90351942949 - 2¹⁷ = 90351811877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90351942949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90351942979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45175971474 + 45175971475.

It is an arithmetic number, because the mean of its divisors is an integer number (45175971475).

Almost surely, 2^90351942949 is an apocalyptic number.

It is an amenable number.

90351942949 is a deficient number, since it is larger than the sum of its proper divisors (1).

90351942949 is an equidigital number, since it uses as much as digits as its factorization.

90351942949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The spelling of 90351942949 in words is "ninety billion, three hundred fifty-one million, nine hundred forty-two thousand, nine hundred forty-nine".