43897313 has 8 divisors (see below), whose sum is σ = 44307648. Its totient is φ = 43489264.

The previous prime is 43897307. The next prime is 43897331. The reversal of 43897313 is 31379834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43897313 - 2⁸ = 43897057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43897813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87020 + ... + 87522.

It is an arithmetic number, because the mean of its divisors is an integer number (5538456).

Almost surely, 2^43897313 is an apocalyptic number.

It is an amenable number.

43897313 is a deficient number, since it is larger than the sum of its proper divisors (410335).

43897313 is a wasteful number, since it uses less digits than its factorization.

43897313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143.

The product of its digits is 54432, while the sum is 38.

The square root of 43897313 is about 6625.5047354900. The cubic root of 43897313 is about 352.7599825764.

The spelling of 43897313 in words is "forty-three million, eight hundred ninety-seven thousand, three hundred thirteen".