34938991 has 4 divisors (see below), whose sum is σ = 34966800. Its totient is φ = 34911184.

The previous prime is 34938977. The next prime is 34939007. The reversal of 34938991 is 19983943.

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

It is a cyclic number.

It is not a de Polignac number, because 34938991 - 2¹⁷ = 34807919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34938931) 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, 11926 + ... + 14563.

It is an arithmetic number, because the mean of its divisors is an integer number (8741700).

Almost surely, 2^34938991 is an apocalyptic number.

34938991 is a deficient number, since it is larger than the sum of its proper divisors (27809).

34938991 is a wasteful number, since it uses less digits than its factorization.

34938991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27808.

The product of its digits is 209952, while the sum is 46.

The square root of 34938991 is about 5910.9213325843. The cubic root of 34938991 is about 326.9164590650.

It can be divided in two parts, 349 and 38991, that added together give a triangular number (39340 = T₂₈₀).

The spelling of 34938991 in words is "thirty-four million, nine hundred thirty-eight thousand, nine hundred ninety-one".