34186921 has 4 divisors (see below), whose sum is σ = 34313344. Its totient is φ = 34060500.

The previous prime is 34186903. The next prime is 34186931. The reversal of 34186921 is 12968143.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 34186921 - 2⁷ = 34186793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34186931) 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, 62805 + ... + 63346.

It is an arithmetic number, because the mean of its divisors is an integer number (8578336).

Almost surely, 2^34186921 is an apocalyptic number.

It is an amenable number.

34186921 is a deficient number, since it is larger than the sum of its proper divisors (126423).

34186921 is a wasteful number, since it uses less digits than its factorization.

34186921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126422.

The product of its digits is 10368, while the sum is 34.

The square root of 34186921 is about 5846.9582690490. The cubic root of 34186921 is about 324.5537734079.

The spelling of 34186921 in words is "thirty-four million, one hundred eighty-six thousand, nine hundred twenty-one".