13954643 has 2 divisors, whose sum is σ = 13954644. Its totient is φ = 13954642.

The previous prime is 13954613. The next prime is 13954649. The reversal of 13954643 is 34645931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13954643 - 2⁶ = 13954579 is a prime.

It is a super-2 number, since 2×13954643² = 389464122514898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13954649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6977321 + 6977322.

It is an arithmetic number, because the mean of its divisors is an integer number (6977322).

Almost surely, 2^13954643 is an apocalyptic number.

13954643 is a deficient number, since it is larger than the sum of its proper divisors (1).

13954643 is an equidigital number, since it uses as much as digits as its factorization.

13954643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 13954643 is about 3735.5913855774. The cubic root of 13954643 is about 240.7536666795.

The spelling of 13954643 in words is "thirteen million, nine hundred fifty-four thousand, six hundred forty-three".