916105947 has 4 divisors (see below), whose sum is σ = 1221474600. Its totient is φ = 610737296.

The previous prime is 916105933. The next prime is 916105951. The reversal of 916105947 is 749501619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749501619 = 3 ⋅249833873.

It is a cyclic number.

It is not a de Polignac number, because 916105947 - 2¹⁰ = 916104923 is a prime.

It is a super-3 number, since 3×916105947³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 916105899 and 916105908.

It is not an unprimeable number, because it can be changed into a prime (916105147) 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, 152684322 + ... + 152684327.

It is an arithmetic number, because the mean of its divisors is an integer number (305368650).

Almost surely, 2^916105947 is an apocalyptic number.

916105947 is a deficient number, since it is larger than the sum of its proper divisors (305368653).

916105947 is a wasteful number, since it uses less digits than its factorization.

916105947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305368652.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 916105947 is about 30267.2421439417. The cubic root of 916105947 is about 971.2146709603.

The spelling of 916105947 in words is "nine hundred sixteen million, one hundred five thousand, nine hundred forty-seven".