34809749 has 4 divisors (see below), whose sum is σ = 37487436. Its totient is φ = 32132064.

The previous prime is 34809737. The next prime is 34809757. The reversal of 34809749 is 94790843.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6666724 + 28143025 = 2582^2 + 5305^2 .

It is a cyclic number.

It is not a de Polignac number, because 34809749 - 2²⁰ = 33761173 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 (34809449) 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, 1338824 + ... + 1338849.

It is an arithmetic number, because the mean of its divisors is an integer number (9371859).

Almost surely, 2^34809749 is an apocalyptic number.

It is an amenable number.

34809749 is a deficient number, since it is larger than the sum of its proper divisors (2677687).

34809749 is a wasteful number, since it uses less digits than its factorization.

34809749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677686.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 34809749 is about 5899.9787287752. The cubic root of 34809749 is about 326.5128646843.

The spelling of 34809749 in words is "thirty-four million, eight hundred nine thousand, seven hundred forty-nine".