46440409 has 4 divisors (see below), whose sum is σ = 47000016. Its totient is φ = 45880804.

The previous prime is 46440391. The next prime is 46440451. The reversal of 46440409 is 90404464.

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 46440409 - 2¹⁹ = 45916121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46440109) 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, 279679 + ... + 279844.

It is an arithmetic number, because the mean of its divisors is an integer number (11750004).

Almost surely, 2^46440409 is an apocalyptic number.

It is an amenable number.

46440409 is a deficient number, since it is larger than the sum of its proper divisors (559607).

46440409 is an equidigital number, since it uses as much as digits as its factorization.

46440409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559606.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 46440409 is about 6814.7200235960. The cubic root of 46440409 is about 359.4446401047. Note that the first 3 decimals are identical.

The spelling of 46440409 in words is "forty-six million, four hundred forty thousand, four hundred nine".