9320639 has 2 divisors, whose sum is σ = 9320640. Its totient is φ = 9320638.

The previous prime is 9320627. The next prime is 9320671. The reversal of 9320639 is 9360239.

It is an a-pointer prime, because the next prime (9320671) can be obtained adding 9320639 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9320639 is a prime.

It is a super-2 number, since 2×9320639² = 173748622736642, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9320239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4660319 + 4660320.

It is an arithmetic number, because the mean of its divisors is an integer number (4660320).

Almost surely, 2^9320639 is an apocalyptic number.

9320639 is a deficient number, since it is larger than the sum of its proper divisors (1).

9320639 is an equidigital number, since it uses as much as digits as its factorization.

9320639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 9320639 is about 3052.9721584056. The cubic root of 9320639 is about 210.4498218818.

The spelling of 9320639 in words is "nine million, three hundred twenty thousand, six hundred thirty-nine".