46839209 has 4 divisors (see below), whose sum is σ = 47480916. Its totient is φ = 46197504.

The previous prime is 46839167. The next prime is 46839211. The reversal of 46839209 is 90293864.

It is a happy number.

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 21114025 + 25725184 = 4595^2 + 5072^2 .

It is a cyclic number.

It is not a de Polignac number, because 46839209 - 2¹⁶ = 46773673 is a prime.

It is a super-2 number, since 2×46839209² = 4387822999491362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46839259) 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, 320744 + ... + 320889.

It is an arithmetic number, because the mean of its divisors is an integer number (11870229).

Almost surely, 2^46839209 is an apocalyptic number.

It is an amenable number.

46839209 is a deficient number, since it is larger than the sum of its proper divisors (641707).

46839209 is an equidigital number, since it uses as much as digits as its factorization.

46839209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641706.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 46839209 is about 6843.9176646129. The cubic root of 46839209 is about 360.4706011140.

The spelling of 46839209 in words is "forty-six million, eight hundred thirty-nine thousand, two hundred nine".