9690391 has 8 divisors (see below), whose sum is σ = 10511424. Its totient is φ = 8897280.

The previous prime is 9690371. The next prime is 9690407. The reversal of 9690391 is 1930969.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9690391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9690391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9690341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6255 + ... + 7648.

It is an arithmetic number, because the mean of its divisors is an integer number (1313928).

Almost surely, 2^9690391 is an apocalyptic number.

9690391 is a deficient number, since it is larger than the sum of its proper divisors (821033).

9690391 is a wasteful number, since it uses less digits than its factorization.

9690391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13961.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 9690391 is about 3112.9392862695. The cubic root of 9690391 is about 213.1966781606.

The spelling of 9690391 in words is "nine million, six hundred ninety thousand, three hundred ninety-one".