671039469 has 12 divisors (see below), whose sum is σ = 969543900. Its totient is φ = 447237504.

The previous prime is 671039461. The next prime is 671039483. The reversal of 671039469 is 964930176.

It can be written as a sum of positive squares in 2 ways, for example, as 133402500 + 537636969 = 11550^2 + 23187^2 .

It is not a de Polignac number, because 671039469 - 2³ = 671039461 is a prime.

It is a super-2 number, since 2×671039469² = 900587937911603922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671039461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35317 + ... + 50885.

It is an arithmetic number, because the mean of its divisors is an integer number (80795325).

Almost surely, 2^671039469 is an apocalyptic number.

It is an amenable number.

671039469 is a deficient number, since it is larger than the sum of its proper divisors (298504431).

671039469 is a wasteful number, since it uses less digits than its factorization.

671039469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20364 (or 20361 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 671039469 is about 25904.4295246971. The cubic root of 671039469 is about 875.4863012143.

The spelling of 671039469 in words is "six hundred seventy-one million, thirty-nine thousand, four hundred sixty-nine".