9947078442 has 48 divisors (see below), whose sum is σ = 24643187712. Its totient is φ = 2840600160.

The previous prime is 9947078441. The next prime is 9947078443. The reversal of 9947078442 is 2448707499.

It is a happy number.

9947078442 is a `hidden beast` number, since 99 + 47 + 0 + 78 + 442 = 666.

It is an interprime number because it is at equal distance from previous prime (9947078441) and next prime (9947078443).

It is a super-2 number, since 2×9947078442² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9947078441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247288 + ... + 284684.

It is an arithmetic number, because the mean of its divisors is an integer number (513399744).

Almost surely, 2^9947078442 is an apocalyptic number.

9947078442 is an abundant number, since it is smaller than the sum of its proper divisors (14696109270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9947078442 is a wasteful number, since it uses less digits than its factorization.

9947078442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39523 (or 39520 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The square root of 9947078442 is about 99735.0411941560. The cubic root of 9947078442 is about 2150.6274312300.

The spelling of 9947078442 in words is "nine billion, nine hundred forty-seven million, seventy-eight thousand, four hundred forty-two".