43399473 has 16 divisors (see below), whose sum is σ = 64329216. Its totient is φ = 25845120.

The previous prime is 43399469. The next prime is 43399481. The reversal of 43399473 is 37499334.

It is not a de Polignac number, because 43399473 - 2² = 43399469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43399403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16740 + ... + 19157.

It is an arithmetic number, because the mean of its divisors is an integer number (4020576).

Almost surely, 2^43399473 is an apocalyptic number.

It is an amenable number.

43399473 is a deficient number, since it is larger than the sum of its proper divisors (20929743).

43399473 is a wasteful number, since it uses less digits than its factorization.

43399473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35944.

The product of its digits is 244944, while the sum is 42.

The square root of 43399473 is about 6587.8276389110. The cubic root of 43399473 is about 351.4213574386.

The spelling of 43399473 in words is "forty-three million, three hundred ninety-nine thousand, four hundred seventy-three".