34939921 has 9 divisors (see below), whose sum is σ = 36667771. Its totient is φ = 33290752.

The previous prime is 34939909. The next prime is 34939937. The reversal of 34939921 is 12993943.

The square root of 34939921 is 5911.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 34398225 + 541696 = 5865^2 + 736^2 .

It is not a de Polignac number, because 34939921 - 2¹⁵ = 34907153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34939321) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 135825 + ... + 136081.

Almost surely, 2^34939921 is an apocalyptic number.

34939921 is the 5911-st square number.

34939921 is the 2956-th centered octagonal number.

It is an amenable number.

34939921 is a deficient number, since it is larger than the sum of its proper divisors (1727850).

34939921 is an frugal number, since it uses more digits than its factorization.

34939921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 280 counting only the distinct ones).

The product of its digits is 52488, while the sum is 40.

The cubic root of 34939921 is about 326.9193596412.

The spelling of 34939921 in words is "thirty-four million, nine hundred thirty-nine thousand, nine hundred twenty-one".