16698139 has 2 divisors, whose sum is σ = 16698140. Its totient is φ = 16698138.

The previous prime is 16698107. The next prime is 16698173. The reversal of 16698139 is 93189661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16698139 - 2⁵ = 16698107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16698095 and 16698104.

It is not a weakly prime, because it can be changed into another prime (16698839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8349069 + 8349070.

It is an arithmetic number, because the mean of its divisors is an integer number (8349070).

Almost surely, 2^16698139 is an apocalyptic number.

16698139 is a deficient number, since it is larger than the sum of its proper divisors (1).

16698139 is an equidigital number, since it uses as much as digits as its factorization.

16698139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 43.

The square root of 16698139 is about 4086.3356445598. The cubic root of 16698139 is about 255.5971600051.

The spelling of 16698139 in words is "sixteen million, six hundred ninety-eight thousand, one hundred thirty-nine".