34539921 has 48 divisors (see below), whose sum is σ = 56609280. Its totient is φ = 20148480.

The previous prime is 34539913. The next prime is 34539943. The reversal of 34539921 is 12993543.

It is a happy number.

34539921 is a `hidden beast` number, since 34 + 539 + 92 + 1 = 666.

It is not a de Polignac number, because 34539921 - 2³ = 34539913 is a prime.

It is a super-2 number, since 2×34539921² = 2386012285372482, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (29160) is a multiple of the sum of its prime divisors (243).

It is not an unprimeable number, because it can be changed into a prime (34539521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 322750 + ... + 322856.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^34539921 is an apocalyptic number.

34539921 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

34539921 is a deficient number, since it is larger than the sum of its proper divisors (22069359).

34539921 is a wasteful number, since it uses less digits than its factorization.

34539921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 243 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 34539921 is about 5877.0673809307. The cubic root of 34539921 is about 325.6670198364.

The spelling of 34539921 in words is "thirty-four million, five hundred thirty-nine thousand, nine hundred twenty-one".