34209669 has 16 divisors (see below), whose sum is σ = 49633472. Its totient is φ = 20832768.

The previous prime is 34209667. The next prime is 34209683. The reversal of 34209669 is 96690243.

It is a happy number.

It is not a de Polignac number, because 34209669 - 2¹ = 34209667 is a prime.

It is a super-2 number, since 2×34209669² = 2340602906179122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34209667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 739 + ... + 8304.

It is an arithmetic number, because the mean of its divisors is an integer number (3102092).

Almost surely, 2^34209669 is an apocalyptic number.

34209669 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

34209669 is a deficient number, since it is larger than the sum of its proper divisors (15423803).

34209669 is a wasteful number, since it uses less digits than its factorization.

34209669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9156.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 34209669 is about 5848.9032305211. The cubic root of 34209669 is about 324.6257435463.

The spelling of 34209669 in words is "thirty-four million, two hundred nine thousand, six hundred sixty-nine".