3509429 has 24 divisors (see below), whose sum is σ = 4727808. Its totient is φ = 2567040.

The previous prime is 3509419. The next prime is 3509437. The reversal of 3509429 is 9249053.

It is not a de Polignac number, because 3509429 - 2¹⁶ = 3443893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3509395 and 3509404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3509419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8972 + ... + 9354.

It is an arithmetic number, because the mean of its divisors is an integer number (196992).

Almost surely, 2^3509429 is an apocalyptic number.

It is an amenable number.

3509429 is a deficient number, since it is larger than the sum of its proper divisors (1218379).

3509429 is a wasteful number, since it uses less digits than its factorization.

3509429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 3509429 is about 1873.3470046951. The cubic root of 3509429 is about 151.9656691857.

It can be divided in two parts, 350 and 9429, that added together give a palindrome (9779).

The spelling of 3509429 in words is "three million, five hundred nine thousand, four hundred twenty-nine".