34999891 has 4 divisors (see below), whose sum is σ = 35945872. Its totient is φ = 34053912.

The previous prime is 34999879. The next prime is 34999901. The reversal of 34999891 is 19899943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19899943 = 7 ⋅2842849.

It is not a de Polignac number, because 34999891 - 2⁷ = 34999763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34999871) 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, 472935 + ... + 473008.

It is an arithmetic number, because the mean of its divisors is an integer number (8986468).

Almost surely, 2^34999891 is an apocalyptic number.

34999891 is a deficient number, since it is larger than the sum of its proper divisors (945981).

34999891 is an equidigital number, since it uses as much as digits as its factorization.

34999891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945980.

The product of its digits is 629856, while the sum is 52.

The square root of 34999891 is about 5916.0705709111. The cubic root of 34999891 is about 327.1062914507.

Adding to 34999891 its sum of digits (52), we get a palindrome (34999943).

The spelling of 34999891 in words is "thirty-four million, nine hundred ninety-nine thousand, eight hundred ninety-one".