34957921 has 2 divisors, whose sum is σ = 34957922. Its totient is φ = 34957920.

The previous prime is 34957919. The next prime is 34957931. The reversal of 34957921 is 12975943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21715600 + 13242321 = 4660^2 + 3639^2 .

It is a cyclic number.

It is not a de Polignac number, because 34957921 - 2¹ = 34957919 is a prime.

Together with 34957919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (34957931) 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 as a sum of consecutive naturals, namely, 17478960 + 17478961.

It is an arithmetic number, because the mean of its divisors is an integer number (17478961).

Almost surely, 2^34957921 is an apocalyptic number.

It is an amenable number.

34957921 is a deficient number, since it is larger than the sum of its proper divisors (1).

34957921 is an equidigital number, since it uses as much as digits as its factorization.

34957921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 34957921 is about 5912.5223889640. The cubic root of 34957921 is about 326.9754896884.

The spelling of 34957921 in words is "thirty-four million, nine hundred fifty-seven thousand, nine hundred twenty-one".