9145399893 has 16 divisors (see below), whose sum is σ = 14416394880. Its totient is φ = 5045737536.

The previous prime is 9145399891. The next prime is 9145399897. The reversal of 9145399893 is 3989935419.

It is not a de Polignac number, because 9145399893 - 2¹ = 9145399891 is a prime.

It is a super-2 number, since 2×9145399893² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9145399891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7507930 + ... + 7509147.

It is an arithmetic number, because the mean of its divisors is an integer number (901024680).

Almost surely, 2^9145399893 is an apocalyptic number.

It is an amenable number.

9145399893 is a deficient number, since it is larger than the sum of its proper divisors (5270994987).

9145399893 is a wasteful number, since it uses less digits than its factorization.

9145399893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15017116.

The product of its digits is 9447840, while the sum is 60.

The square root of 9145399893 is about 95631.5841811689. The cubic root of 9145399893 is about 2091.2256642502.

The spelling of 9145399893 in words is "nine billion, one hundred forty-five million, three hundred ninety-nine thousand, eight hundred ninety-three".