105979619 has 2 divisors, whose sum is σ = 105979620. Its totient is φ = 105979618.

The previous prime is 105979613. The next prime is 105979633. The reversal of 105979619 is 916979501.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105979619 is a prime.

It is a super-2 number, since 2×105979619² = 22463359286770322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105979613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52989809 + 52989810.

It is an arithmetic number, because the mean of its divisors is an integer number (52989810).

Almost surely, 2^105979619 is an apocalyptic number.

105979619 is a deficient number, since it is larger than the sum of its proper divisors (1).

105979619 is an equidigital number, since it uses as much as digits as its factorization.

105979619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153090, while the sum is 47.

The square root of 105979619 is about 10294.6403045468. The cubic root of 105979619 is about 473.2320152226.

The spelling of 105979619 in words is "one hundred five million, nine hundred seventy-nine thousand, six hundred nineteen".