46819921 has 4 divisors (see below), whose sum is σ = 49574052. Its totient is φ = 44065792.

The previous prime is 46819907. The next prime is 46819931. The reversal of 46819921 is 12991864.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42719296 + 4100625 = 6536^2 + 2025^2 .

It is a cyclic number.

It is not a de Polignac number, because 46819921 - 2¹¹ = 46817873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46819931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377040 + ... + 1377073.

It is an arithmetic number, because the mean of its divisors is an integer number (12393513).

Almost surely, 2^46819921 is an apocalyptic number.

It is an amenable number.

46819921 is a deficient number, since it is larger than the sum of its proper divisors (2754131).

46819921 is a wasteful number, since it uses less digits than its factorization.

46819921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754130.

The product of its digits is 31104, while the sum is 40.

The square root of 46819921 is about 6842.5083850880. The cubic root of 46819921 is about 360.4211147138.

The spelling of 46819921 in words is "forty-six million, eight hundred nineteen thousand, nine hundred twenty-one".