407671689 has 4 divisors (see below), whose sum is σ = 543562256. Its totient is φ = 271781124.

The previous prime is 407671673. The next prime is 407671717. The reversal of 407671689 is 986176704.

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 not a de Polignac number, because 407671689 - 2⁴ = 407671673 is a prime.

It is a super-2 number, since 2×407671689² = 332392412024225442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (407671889) 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, 67945279 + ... + 67945284.

It is an arithmetic number, because the mean of its divisors is an integer number (135890564).

Almost surely, 2^407671689 is an apocalyptic number.

It is an amenable number.

407671689 is a deficient number, since it is larger than the sum of its proper divisors (135890567).

407671689 is a wasteful number, since it uses less digits than its factorization.

407671689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135890566.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 407671689 is about 20190.8813329186. The cubic root of 407671689 is about 741.4869595715.

The spelling of 407671689 in words is "four hundred seven million, six hundred seventy-one thousand, six hundred eighty-nine".