9961994119 has 48 divisors (see below), whose sum is σ = 13050021888. Its totient is φ = 7385688000.

The previous prime is 9961994047. The next prime is 9961994137. The reversal of 9961994119 is 9114991699.

It is not a de Polignac number, because 9961994119 - 2¹⁵ = 9961961351 is a prime.

It is a super-2 number, since 2×9961994119² (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 (9961995119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4512714 + ... + 4514920.

It is an arithmetic number, because the mean of its divisors is an integer number (271875456).

Almost surely, 2^9961994119 is an apocalyptic number.

9961994119 is a deficient number, since it is larger than the sum of its proper divisors (3088027769).

9961994119 is a wasteful number, since it uses less digits than its factorization.

9961994119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348 (or 2317 counting only the distinct ones).

The product of its digits is 1417176, while the sum is 58.

The square root of 9961994119 is about 99809.7896951997. The cubic root of 9961994119 is about 2151.7018520234.

The spelling of 9961994119 in words is "nine billion, nine hundred sixty-one million, nine hundred ninety-four thousand, one hundred nineteen".