46809021 has 16 divisors (see below), whose sum is σ = 72499328. Its totient is φ = 26308800.

The previous prime is 46809019. The next prime is 46809029. The reversal of 46809021 is 12090864.

It is not a de Polignac number, because 46809021 - 2¹ = 46809019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 46809021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46809029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16990 + ... + 19551.

It is an arithmetic number, because the mean of its divisors is an integer number (4531208).

Almost surely, 2^46809021 is an apocalyptic number.

It is an amenable number.

46809021 is a deficient number, since it is larger than the sum of its proper divisors (25690307).

46809021 is a wasteful number, since it uses less digits than its factorization.

46809021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36612.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 46809021 is about 6841.7118471915. The cubic root of 46809021 is about 360.3931430372.

Adding to 46809021 its reverse (12090864), we get a palindrome (58899885).

The spelling of 46809021 in words is "forty-six million, eight hundred nine thousand, twenty-one".