34389421 has 16 divisors (see below), whose sum is σ = 38890368. Its totient is φ = 30139200.

The previous prime is 34389409. The next prime is 34389431. The reversal of 34389421 is 12498343.

It is a cyclic number.

It is not a de Polignac number, because 34389421 - 2¹³ = 34381229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34389431) 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, 35080 + ... + 36046.

It is an arithmetic number, because the mean of its divisors is an integer number (2430648).

Almost surely, 2^34389421 is an apocalyptic number.

It is an amenable number.

34389421 is a deficient number, since it is larger than the sum of its proper divisors (4500947).

34389421 is a wasteful number, since it uses less digits than its factorization.

34389421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092.

The product of its digits is 20736, while the sum is 34.

The square root of 34389421 is about 5864.2493978343. The cubic root of 34389421 is about 325.1933240330.

The spelling of 34389421 in words is "thirty-four million, three hundred eighty-nine thousand, four hundred twenty-one".