46440809 has 4 divisors (see below), whose sum is σ = 47696004. Its totient is φ = 45185616.

The previous prime is 46440791. The next prime is 46440827. The reversal of 46440809 is 90804464.

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

It is an interprime number because it is at equal distance from previous prime (46440791) and next prime (46440827).

It can be written as a sum of positive squares in 2 ways, for example, as 43099225 + 3341584 = 6565^2 + 1828^2 .

It is a cyclic number.

It is not a de Polignac number, because 46440809 - 2⁸ = 46440553 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 (46440859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627542 + ... + 627615.

It is an arithmetic number, because the mean of its divisors is an integer number (11924001).

Almost surely, 2^46440809 is an apocalyptic number.

It is an amenable number.

46440809 is a deficient number, since it is larger than the sum of its proper divisors (1255195).

46440809 is a wasteful number, since it uses less digits than its factorization.

46440809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255194.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 46440809 is about 6814.7493717671. The cubic root of 46440809 is about 359.4456720899.

The spelling of 46440809 in words is "forty-six million, four hundred forty thousand, eight hundred nine".