90804349 has 2 divisors, whose sum is σ = 90804350. Its totient is φ = 90804348.

The previous prime is 90804283. The next prime is 90804359. The reversal of 90804349 is 94340809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63712324 + 27092025 = 7982^2 + 5205^2 .

It is an emirp because it is prime and its reverse (94340809) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90804349 - 2¹¹ = 90802301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90804359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45402174 + 45402175.

It is an arithmetic number, because the mean of its divisors is an integer number (45402175).

Almost surely, 2^90804349 is an apocalyptic number.

It is an amenable number.

90804349 is a deficient number, since it is larger than the sum of its proper divisors (1).

90804349 is an equidigital number, since it uses as much as digits as its factorization.

90804349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 90804349 is about 9529.1315973702. The cubic root of 90804349 is about 449.4715591117.

The spelling of 90804349 in words is "ninety million, eight hundred four thousand, three hundred forty-nine".