46478821 has 8 divisors (see below), whose sum is σ = 47049624. Its totient is φ = 45911040.

The previous prime is 46478819. The next prime is 46478849. The reversal of 46478821 is 12887464.

It can be written as a sum of positive squares in 4 ways, for example, as 34596 + 46444225 = 186^2 + 6815^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 46478821 - 2¹ = 46478819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46478321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47085 + ... + 48061.

It is an arithmetic number, because the mean of its divisors is an integer number (5881203).

Almost surely, 2^46478821 is an apocalyptic number.

It is an amenable number.

46478821 is a deficient number, since it is larger than the sum of its proper divisors (570803).

46478821 is a wasteful number, since it uses less digits than its factorization.

46478821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511.

The product of its digits is 86016, while the sum is 40.

The square root of 46478821 is about 6817.5377520040. The cubic root of 46478821 is about 359.5437146166.

The spelling of 46478821 in words is "forty-six million, four hundred seventy-eight thousand, eight hundred twenty-one".