43405379 has 4 divisors (see below), whose sum is σ = 43492176. Its totient is φ = 43318584.

The previous prime is 43405321. The next prime is 43405387. The reversal of 43405379 is 97350434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97350434 = 2 ⋅48675217.

It is a cyclic number.

It is not a de Polignac number, because 43405379 - 2⁸ = 43405123 is a prime.

It is a super-2 number, since 2×43405379² = 3768053852267282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43405309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42644 + ... + 43649.

It is an arithmetic number, because the mean of its divisors is an integer number (10873044).

Almost surely, 2^43405379 is an apocalyptic number.

43405379 is a deficient number, since it is larger than the sum of its proper divisors (86797).

43405379 is an equidigital number, since it uses as much as digits as its factorization.

43405379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86796.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 43405379 is about 6588.2758746124. The cubic root of 43405379 is about 351.4372977273.

The spelling of 43405379 in words is "forty-three million, four hundred five thousand, three hundred seventy-nine".