14021406549 has 12 divisors (see below), whose sum is σ = 20259739500. Its totient is φ = 9344559744.

The previous prime is 14021406491. The next prime is 14021406563. The reversal of 14021406549 is 94560412041.

It can be written as a sum of positive squares in 2 ways, for example, as 9436762449 + 4584644100 = 97143^2 + 67710^2 .

It is not a de Polignac number, because 14021406549 - 2²⁹ = 13484535637 is a prime.

It is a super-2 number, since 2×14021406549² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14021406449) 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, 224374 + ... + 279975.

It is an arithmetic number, because the mean of its divisors is an integer number (1688311625).

Almost surely, 2^14021406549 is an apocalyptic number.

It is an amenable number.

14021406549 is a deficient number, since it is larger than the sum of its proper divisors (6238332951).

14021406549 is a wasteful number, since it uses less digits than its factorization.

14021406549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507444 (or 507441 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 14021406549 in words is "fourteen billion, twenty-one million, four hundred six thousand, five hundred forty-nine".