46840721 has 4 divisors (see below), whose sum is σ = 48351744. Its totient is φ = 45329700.

The previous prime is 46840709. The next prime is 46840723. The reversal of 46840721 is 12704864.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 46840721 - 2¹⁰ = 46839697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (46840723) 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, 755465 + ... + 755526.

It is an arithmetic number, because the mean of its divisors is an integer number (12087936).

Almost surely, 2^46840721 is an apocalyptic number.

It is an amenable number.

46840721 is a deficient number, since it is larger than the sum of its proper divisors (1511023).

46840721 is a wasteful number, since it uses less digits than its factorization.

46840721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511022.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 46840721 is about 6844.0281267686. The cubic root of 46840721 is about 360.4744798138.

The spelling of 46840721 in words is "forty-six million, eight hundred forty thousand, seven hundred twenty-one".