16098991 has 2 divisors, whose sum is σ = 16098992. Its totient is φ = 16098990.

The previous prime is 16098941. The next prime is 16099001. The reversal of 16098991 is 19989061.

It is a strong prime.

It is an emirp because it is prime and its reverse (19989061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16098991 - 2⁹ = 16098479 is a prime.

It is a super-2 number, since 2×16098991² = 518355022436162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16098931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8049495 + 8049496.

It is an arithmetic number, because the mean of its divisors is an integer number (8049496).

Almost surely, 2^16098991 is an apocalyptic number.

16098991 is a deficient number, since it is larger than the sum of its proper divisors (1).

16098991 is an equidigital number, since it uses as much as digits as its factorization.

16098991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 16098991 is about 4012.3547948804. The cubic root of 16098991 is about 252.5028121113.

The spelling of 16098991 in words is "sixteen million, ninety-eight thousand, nine hundred ninety-one".