990000619 has 2 divisors, whose sum is σ = 990000620. Its totient is φ = 990000618.

The previous prime is 990000617. The next prime is 990000623. The reversal of 990000619 is 916000099.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 990000619 - 2¹ = 990000617 is a prime.

It is a super-2 number, since 2×990000619² = 1960202451240766322, which contains 22 as substring.

Together with 990000617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (990000617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495000309 + 495000310.

It is an arithmetic number, because the mean of its divisors is an integer number (495000310).

Almost surely, 2^990000619 is an apocalyptic number.

990000619 is a deficient number, since it is larger than the sum of its proper divisors (1).

990000619 is an equidigital number, since it uses as much as digits as its factorization.

990000619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 990000619 is about 31464.2752816587. The cubic root of 990000619 is about 996.6557011330.

The spelling of 990000619 in words is "nine hundred ninety million, six hundred nineteen", and thus it is an aban number.