43490947 has 8 divisors (see below), whose sum is σ = 47294496. Its totient is φ = 39825792.

The previous prime is 43490929. The next prime is 43490959. The reversal of 43490947 is 74909434.

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 43490947 - 2¹¹ = 43488899 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43490977) 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, 33943 + ... + 35200.

It is an arithmetic number, because the mean of its divisors is an integer number (5911812).

Almost surely, 2^43490947 is an apocalyptic number.

43490947 is a deficient number, since it is larger than the sum of its proper divisors (3803549).

43490947 is a wasteful number, since it uses less digits than its factorization.

43490947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69197.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 43490947 is about 6594.7666372662. The cubic root of 43490947 is about 351.6680836202.

The spelling of 43490947 in words is "forty-three million, four hundred ninety thousand, nine hundred forty-seven".