43396965 has 40 divisors (see below), whose sum is σ = 78791328. Its totient is φ = 22848480.

The previous prime is 43396961. The next prime is 43396979. The reversal of 43396965 is 56969334.

It is a happy number.

It is not a de Polignac number, because 43396965 - 2² = 43396961 is a prime.

It is a super-2 number, since 2×43396965² = 3766593142422450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 43396965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43396961) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 32970 + ... + 34260.

Almost surely, 2^43396965 is an apocalyptic number.

43396965 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43396965 is a deficient number, since it is larger than the sum of its proper divisors (35394363).

43396965 is a wasteful number, since it uses less digits than its factorization.

43396965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1382 counting only the distinct ones).

The product of its digits is 524880, while the sum is 45.

The square root of 43396965 is about 6587.6372850970. The cubic root of 43396965 is about 351.4145879113.

The spelling of 43396965 in words is "forty-three million, three hundred ninety-six thousand, nine hundred sixty-five".