34145749 has 4 divisors (see below), whose sum is σ = 37249920. Its totient is φ = 31041580.

The previous prime is 34145723. The next prime is 34145759. The reversal of 34145749 is 94754143.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 34145749 - 2²⁵ = 591317 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 (34145759) 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, 1552069 + ... + 1552090.

It is an arithmetic number, because the mean of its divisors is an integer number (9312480).

Almost surely, 2^34145749 is an apocalyptic number.

It is an amenable number.

34145749 is a deficient number, since it is larger than the sum of its proper divisors (3104171).

34145749 is a wasteful number, since it uses less digits than its factorization.

34145749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104170.

The product of its digits is 60480, while the sum is 37.

The square root of 34145749 is about 5843.4364033503. The cubic root of 34145749 is about 324.4234321798.

The spelling of 34145749 in words is "thirty-four million, one hundred forty-five thousand, seven hundred forty-nine".