1709398480 has 20 divisors (see below), whose sum is σ = 3974351652. Its totient is φ = 683759360.

The previous prime is 1709398451. The next prime is 1709398489. The reversal of 1709398480 is 848939071.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1292258704 + 417139776 = 35948^2 + 20424^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1709398489) 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, 10683661 + ... + 10683820.

Almost surely, 2^1709398480 is an apocalyptic number.

1709398480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1709398480 is an abundant number, since it is smaller than the sum of its proper divisors (2264953172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1709398480 is a wasteful number, since it uses less digits than its factorization.

1709398480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21367494 (or 21367488 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 1709398480 is about 41344.8724753143. The cubic root of 1709398480 is about 1195.6785488236.

The spelling of 1709398480 in words is "one billion, seven hundred nine million, three hundred ninety-eight thousand, four hundred eighty".