88781947 has 2 divisors, whose sum is σ = 88781948. Its totient is φ = 88781946.

The previous prime is 88781899. The next prime is 88781951. The reversal of 88781947 is 74918788.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88781947 is a prime.

It is a super-2 number, since 2×88781947² = 15764468226221618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 88781894 and 88781903.

It is not a weakly prime, because it can be changed into another prime (88781977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44390973 + 44390974.

It is an arithmetic number, because the mean of its divisors is an integer number (44390974).

Almost surely, 2^88781947 is an apocalyptic number.

88781947 is a deficient number, since it is larger than the sum of its proper divisors (1).

88781947 is an equidigital number, since it uses as much as digits as its factorization.

88781947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 52.

The square root of 88781947 is about 9422.4172588567. The cubic root of 88781947 is about 446.1095855045.

The spelling of 88781947 in words is "eighty-eight million, seven hundred eighty-one thousand, nine hundred forty-seven".