14691890 has 8 divisors (see below), whose sum is σ = 26445420. Its totient is φ = 5876752.

The previous prime is 14691881. The next prime is 14691931. The reversal of 14691890 is 9819641.

It is a happy number.

It is a Cunningham number, because it is equal to 3833²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 14691889 + 1 = 3833^2 + 1^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734585 + ... + 734604.

Almost surely, 2^14691890 is an apocalyptic number.

14691890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14691890 is a deficient number, since it is larger than the sum of its proper divisors (11753530).

14691890 is a wasteful number, since it uses less digits than its factorization.

14691890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469196.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 14691890 is about 3833.0001304461. Note that the first 3 decimals coincide. The cubic root of 14691890 is about 244.9209240846.

The spelling of 14691890 in words is "fourteen million, six hundred ninety-one thousand, eight hundred ninety".