34385391 has 20 divisors (see below), whose sum is σ = 53602032. Its totient is φ = 21925728.

The previous prime is 34385389. The next prime is 34385399. The reversal of 34385391 is 19358343.

It is not a de Polignac number, because 34385391 - 2¹ = 34385389 is a prime.

It is a super-2 number, since 2×34385391² = 2364710228445762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34385399) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7366 + ... + 11091.

Almost surely, 2^34385391 is an apocalyptic number.

34385391 is a deficient number, since it is larger than the sum of its proper divisors (19216641).

34385391 is a wasteful number, since it uses less digits than its factorization.

34385391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18492 (or 18483 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 34385391 is about 5863.9057802799. The cubic root of 34385391 is about 325.1806207049.

The spelling of 34385391 in words is "thirty-four million, three hundred eighty-five thousand, three hundred ninety-one".