34294921 has 2 divisors, whose sum is σ = 34294922. Its totient is φ = 34294920.

The previous prime is 34294879. The next prime is 34294973. The reversal of 34294921 is 12949243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33223696 + 1071225 = 5764^2 + 1035^2 .

It is an emirp because it is prime and its reverse (12949243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34294921 - 2¹⁷ = 34163849 is a prime.

It is a super-2 number, since 2×34294921² = 2352283212792482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (34294991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17147460 + 17147461.

It is an arithmetic number, because the mean of its divisors is an integer number (17147461).

Almost surely, 2^34294921 is an apocalyptic number.

It is an amenable number.

34294921 is a deficient number, since it is larger than the sum of its proper divisors (1).

34294921 is an equidigital number, since it uses as much as digits as its factorization.

34294921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 34294921 is about 5856.1865578207. The cubic root of 34294921 is about 324.8951803982.

It can be divided in two parts, 3 and 4294921, that added together give a palindrome (4294924).

The spelling of 34294921 in words is "thirty-four million, two hundred ninety-four thousand, nine hundred twenty-one".