116781947 has 2 divisors, whose sum is σ = 116781948. Its totient is φ = 116781946.

The previous prime is 116781941. The next prime is 116781967. The reversal of 116781947 is 749187611.

It is a weak prime.

It is an emirp because it is prime and its reverse (749187611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116781947 - 2¹⁸ = 116519803 is a prime.

It is a super-2 number, since 2×116781947² = 27276046290221618, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 116781898 and 116781907.

It is not a weakly prime, because it can be changed into another prime (116781941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58390973 + 58390974.

It is an arithmetic number, because the mean of its divisors is an integer number (58390974).

Almost surely, 2^116781947 is an apocalyptic number.

116781947 is a deficient number, since it is larger than the sum of its proper divisors (1).

116781947 is an equidigital number, since it uses as much as digits as its factorization.

116781947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 44.

The square root of 116781947 is about 10806.5696222252. The cubic root of 116781947 is about 488.7932919966.

The spelling of 116781947 in words is "one hundred sixteen million, seven hundred eighty-one thousand, nine hundred forty-seven".