43954 has 4 divisors (see below), whose sum is σ = 65934. Its totient is φ = 21976.

The previous prime is 43951. The next prime is 43961. The reversal of 43954 is 45934.

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., 38025 + 5929 = 195^2 + 77^2 .

It is a super-3 number, since 3×43954³ = 254751333643992, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (43951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10987 + ... + 10990.

2⁴³⁹⁵⁴ is an apocalyptic number.

43954 is a deficient number, since it is larger than the sum of its proper divisors (21980).

43954 is a wasteful number, since it uses less digits than its factorization.

43954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21979.

The product of its digits is 2160, while the sum is 25.

The square root of 43954 is about 209.6520927632. The cubic root of 43954 is about 35.2911763344.

The spelling of 43954 in words is "forty-three thousand, nine hundred fifty-four".