8947690742 has 4 divisors (see below), whose sum is σ = 13421536116. Its totient is φ = 4473845370.

The previous prime is 8947690727. The next prime is 8947690747. The reversal of 8947690742 is 2470967498.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×8947690742² (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 (8947690747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2236922684 + ... + 2236922687.

It is an arithmetic number, because the mean of its divisors is an integer number (3355384029).

Almost surely, 2^8947690742 is an apocalyptic number.

8947690742 is a deficient number, since it is larger than the sum of its proper divisors (4473845374).

8947690742 is a wasteful number, since it uses less digits than its factorization.

8947690742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473845373.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The square root of 8947690742 is about 94592.2340469872. The cubic root of 8947690742 is about 2076.0460776289.

The spelling of 8947690742 in words is "eight billion, nine hundred forty-seven million, six hundred ninety thousand, seven hundred forty-two".