9421697487 has 4 divisors (see below), whose sum is σ = 12562263320. Its totient is φ = 6281131656.

The previous prime is 9421697479. The next prime is 9421697489. The reversal of 9421697487 is 7847961249.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9421697487 - 2³ = 9421697479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9421697489) 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, 1570282912 + ... + 1570282917.

It is an arithmetic number, because the mean of its divisors is an integer number (3140565830).

Almost surely, 2^9421697487 is an apocalyptic number.

9421697487 is a deficient number, since it is larger than the sum of its proper divisors (3140565833).

9421697487 is a wasteful number, since it uses less digits than its factorization.

9421697487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140565832.

The product of its digits is 6096384, while the sum is 57.

The square root of 9421697487 is about 97065.4288972135. The cubic root of 9421697487 is about 2112.0768606975.

The spelling of 9421697487 in words is "nine billion, four hundred twenty-one million, six hundred ninety-seven thousand, four hundred eighty-seven".