34107921 has 6 divisors (see below), whose sum is σ = 49267010. Its totient is φ = 22738608.

The previous prime is 34107917. The next prime is 34107949. The reversal of 34107921 is 12970143.

It can be written as a sum of positive squares in only one way, i.e., 17338896 + 16769025 = 4164^2 + 4095^2 .

It is not a de Polignac number, because 34107921 - 2² = 34107917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (34107971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1894876 + ... + 1894893.

Almost surely, 2^34107921 is an apocalyptic number.

It is an amenable number.

34107921 is a deficient number, since it is larger than the sum of its proper divisors (15159089).

34107921 is a wasteful number, since it uses less digits than its factorization.

34107921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789775 (or 3789772 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 34107921 is about 5840.1987123727. The cubic root of 34107921 is about 324.3035849109.

The spelling of 34107921 in words is "thirty-four million, one hundred seven thousand, nine hundred twenty-one".