34091861 has 4 divisors (see below), whose sum is σ = 34238412. Its totient is φ = 33945312.

The previous prime is 34091839. The next prime is 34091887. The reversal of 34091861 is 16819043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16819043 = 29 ⋅579967.

It can be written as a sum of positive squares in 2 ways, for example, as 21911761 + 12180100 = 4681^2 + 3490^2 .

It is a cyclic number.

It is not a de Polignac number, because 34091861 - 2⁶ = 34091797 is a prime.

It is a super-3 number, since 3×34091861³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34091891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72926 + ... + 73391.

It is an arithmetic number, because the mean of its divisors is an integer number (8559603).

Almost surely, 2^34091861 is an apocalyptic number.

It is an amenable number.

34091861 is a deficient number, since it is larger than the sum of its proper divisors (146551).

34091861 is a wasteful number, since it uses less digits than its factorization.

34091861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146550.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 34091861 is about 5838.8235972668. The cubic root of 34091861 is about 324.2526765676.

The spelling of 34091861 in words is "thirty-four million, ninety-one thousand, eight hundred sixty-one".