34390947 has 4 divisors (see below), whose sum is σ = 45854600. Its totient is φ = 22927296.

The previous prime is 34390943. The next prime is 34390999. The reversal of 34390947 is 74909343.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 34390947 - 2² = 34390943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34390943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5731822 + ... + 5731827.

It is an arithmetic number, because the mean of its divisors is an integer number (11463650).

Almost surely, 2^34390947 is an apocalyptic number.

34390947 is a deficient number, since it is larger than the sum of its proper divisors (11463653).

34390947 is a wasteful number, since it uses less digits than its factorization.

34390947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11463652.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 34390947 is about 5864.3795068191. The cubic root of 34390947 is about 325.1981340168.

The spelling of 34390947 in words is "thirty-four million, three hundred ninety thousand, nine hundred forty-seven".