9391440949 has 4 divisors (see below), whose sum is σ = 10245208320. Its totient is φ = 8537673580.

The previous prime is 9391440931. The next prime is 9391440967. The reversal of 9391440949 is 9490441939.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (9391440931) and next prime (9391440967).

It is a cyclic number.

It is not a de Polignac number, because 9391440949 - 2¹⁷ = 9391309877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9391440896 and 9391440905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9391440449) 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, 426883669 + ... + 426883690.

It is an arithmetic number, because the mean of its divisors is an integer number (2561302080).

Almost surely, 2^9391440949 is an apocalyptic number.

It is an amenable number.

9391440949 is a deficient number, since it is larger than the sum of its proper divisors (853767371).

9391440949 is a wasteful number, since it uses less digits than its factorization.

9391440949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853767370.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 9391440949 is about 96909.4471607387. The cubic root of 9391440949 is about 2109.8135508303.

The spelling of 9391440949 in words is "nine billion, three hundred ninety-one million, four hundred forty thousand, nine hundred forty-nine".