34395021 has 6 divisors (see below), whose sum is σ = 49681710. Its totient is φ = 22930008.

The previous prime is 34395019. The next prime is 34395037. The reversal of 34395021 is 12059343.

It can be written as a sum of positive squares in only one way, i.e., 27185796 + 7209225 = 5214^2 + 2685^2 .

It is not a de Polignac number, because 34395021 - 2¹ = 34395019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34395001) 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, 1910826 + ... + 1910843.

It is an arithmetic number, because the mean of its divisors is an integer number (8280285).

Almost surely, 2^34395021 is an apocalyptic number.

It is an amenable number.

34395021 is a deficient number, since it is larger than the sum of its proper divisors (15286689).

34395021 is a wasteful number, since it uses less digits than its factorization.

34395021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821675 (or 3821672 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 34395021 is about 5864.7268478592. The cubic root of 34395021 is about 325.2109746527.

The spelling of 34395021 in words is "thirty-four million, three hundred ninety-five thousand, twenty-one".