90590819 has 8 divisors (see below), whose sum is σ = 98921520. Its totient is φ = 82276000.

The previous prime is 90590779. The next prime is 90590849. The reversal of 90590819 is 91809509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90590819 - 2¹² = 90586723 is a prime.

It is a super-2 number, since 2×90590819² = 16413392974181522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90590849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10169 + ... + 16869.

It is an arithmetic number, because the mean of its divisors is an integer number (12365190).

Almost surely, 2^90590819 is an apocalyptic number.

90590819 is a deficient number, since it is larger than the sum of its proper divisors (8330701).

90590819 is a wasteful number, since it uses less digits than its factorization.

90590819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7941.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 90590819 is about 9517.9209389446. The cubic root of 90590819 is about 449.1189659019.

The spelling of 90590819 in words is "ninety million, five hundred ninety thousand, eight hundred nineteen".