4070091 has 4 divisors (see below), whose sum is σ = 5426792. Its totient is φ = 2713392.

The previous prime is 4070069. The next prime is 4070093. The reversal of 4070091 is 1900704.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4070091 - 2²¹ = 1972939 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4070093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678346 + ... + 678351.

It is an arithmetic number, because the mean of its divisors is an integer number (1356698).

Almost surely, 2^4070091 is an apocalyptic number.

4070091 is a deficient number, since it is larger than the sum of its proper divisors (1356701).

4070091 is a wasteful number, since it uses less digits than its factorization.

4070091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356700.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 4070091 is about 2017.4466535698. The cubic root of 4070091 is about 159.6619294090.

Adding to 4070091 its reverse (1900704), we get a palindrome (5970795).

The spelling of 4070091 in words is "four million, seventy thousand, ninety-one".