14991471 has 12 divisors (see below), whose sum is σ = 23623080. Its totient is φ = 9085680.

The previous prime is 14991439. The next prime is 14991491. The reversal of 14991471 is 17419941.

14991471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 14991471 - 2⁵ = 14991439 is a prime.

It is a super-3 number, since 3×14991471³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14991491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75616 + ... + 75813.

It is an arithmetic number, because the mean of its divisors is an integer number (1968590).

Almost surely, 2^14991471 is an apocalyptic number.

14991471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

14991471 is a deficient number, since it is larger than the sum of its proper divisors (8631609).

14991471 is a wasteful number, since it uses less digits than its factorization.

14991471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151446 (or 151443 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 14991471 is about 3871.8821004778. The cubic root of 14991471 is about 246.5744556314.

The spelling of 14991471 in words is "fourteen million, nine hundred ninety-one thousand, four hundred seventy-one".