21914098 has 4 divisors (see below), whose sum is σ = 32871150. Its totient is φ = 10957048.

The previous prime is 21914093. The next prime is 21914107. The reversal of 21914098 is 89041912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15578809 + 6335289 = 3947^2 + 2517^2 .

It is a super-3 number, since 3×21914098³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21914093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5478523 + ... + 5478526.

Almost surely, 2^21914098 is an apocalyptic number.

21914098 is a deficient number, since it is larger than the sum of its proper divisors (10957052).

21914098 is a wasteful number, since it uses less digits than its factorization.

21914098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10957051.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 21914098 is about 4681.2496194926. The cubic root of 21914098 is about 279.8387592065.

The spelling of 21914098 in words is "twenty-one million, nine hundred fourteen thousand, ninety-eight".