34450821 has 6 divisors (see below), whose sum is σ = 49762310. Its totient is φ = 22967208.

The previous prime is 34450813. The next prime is 34450841. The reversal of 34450821 is 12805443.

It can be written as a sum of positive squares in only one way, i.e., 20657025 + 13793796 = 4545^2 + 3714^2 .

It is not a de Polignac number, because 34450821 - 2³ = 34450813 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 (34450841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1913926 + ... + 1913943.

Almost surely, 2^34450821 is an apocalyptic number.

It is an amenable number.

34450821 is a deficient number, since it is larger than the sum of its proper divisors (15311489).

34450821 is a wasteful number, since it uses less digits than its factorization.

34450821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3827875 (or 3827872 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 34450821 is about 5869.4821747749. The cubic root of 34450821 is about 325.3867459063.

The spelling of 34450821 in words is "thirty-four million, four hundred fifty thousand, eight hundred twenty-one".