407634889 has 4 divisors (see below), whose sum is σ = 411670980. Its totient is φ = 403598800.

The previous prime is 407634859. The next prime is 407634947. The reversal of 407634889 is 988436704.

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 185177664 + 222457225 = 13608^2 + 14915^2 .

It is a cyclic number.

It is not a de Polignac number, because 407634889 - 2⁷ = 407634761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (407634839) 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, 2017894 + ... + 2018095.

It is an arithmetic number, because the mean of its divisors is an integer number (102917745).

Almost surely, 2^407634889 is an apocalyptic number.

It is an amenable number.

407634889 is a deficient number, since it is larger than the sum of its proper divisors (4036091).

407634889 is a wasteful number, since it uses less digits than its factorization.

407634889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036090.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 407634889 is about 20189.9700098836. The cubic root of 407634889 is about 741.4646478748.

The spelling of 407634889 in words is "four hundred seven million, six hundred thirty-four thousand, eight hundred eighty-nine".