46905421 has 4 divisors (see below), whose sum is σ = 46943100. Its totient is φ = 46867744.

The previous prime is 46905407. The next prime is 46905451. The reversal of 46905421 is 12450964.

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 42432196 + 4473225 = 6514^2 + 2115^2 .

It is a cyclic number.

It is not a de Polignac number, because 46905421 - 2¹⁵ = 46872653 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 (46905451) 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, 16906 + ... + 19483.

It is an arithmetic number, because the mean of its divisors is an integer number (11735775).

Almost surely, 2^46905421 is an apocalyptic number.

It is an amenable number.

46905421 is a deficient number, since it is larger than the sum of its proper divisors (37679).

46905421 is a wasteful number, since it uses less digits than its factorization.

46905421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37678.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 46905421 is about 6848.7532442044. The cubic root of 46905421 is about 360.6403751303.

The spelling of 46905421 in words is "forty-six million, nine hundred five thousand, four hundred twenty-one".