90349019 has 2 divisors, whose sum is σ = 90349020. Its totient is φ = 90349018.

The previous prime is 90348919. The next prime is 90349057. The reversal of 90349019 is 91094309.

It is a strong prime.

It is an emirp because it is prime and its reverse (91094309) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90349019 - 2¹² = 90344923 is a prime.

It is a super-2 number, since 2×90349019² = 16325890468524722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90349019.

It is not a weakly prime, because it can be changed into another prime (90349319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45174509 + 45174510.

It is an arithmetic number, because the mean of its divisors is an integer number (45174510).

Almost surely, 2^90349019 is an apocalyptic number.

90349019 is a deficient number, since it is larger than the sum of its proper divisors (1).

90349019 is an equidigital number, since it uses as much as digits as its factorization.

90349019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 90349019 is about 9505.2100976254. The cubic root of 90349019 is about 448.7190220260.

The spelling of 90349019 in words is "ninety million, three hundred forty-nine thousand, nineteen".