9652661399 has 4 divisors (see below), whose sum is σ = 9653453664. Its totient is φ = 9651869136.

The previous prime is 9652661393. The next prime is 9652661407. The reversal of 9652661399 is 9931662569.

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

It is a cyclic number.

It is not a de Polignac number, because 9652661399 - 2¹² = 9652657303 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 (9652661393) 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, 377567 + ... + 402320.

It is an arithmetic number, because the mean of its divisors is an integer number (2413363416).

Almost surely, 2^9652661399 is an apocalyptic number.

9652661399 is a deficient number, since it is larger than the sum of its proper divisors (792265).

9652661399 is a wasteful number, since it uses less digits than its factorization.

9652661399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792264.

The product of its digits is 4723920, while the sum is 56.

The square root of 9652661399 is about 98247.9587523324. The cubic root of 9652661399 is about 2129.1962405602.

The spelling of 9652661399 in words is "nine billion, six hundred fifty-two million, six hundred sixty-one thousand, three hundred ninety-nine".