88477981 has 2 divisors, whose sum is σ = 88477982. Its totient is φ = 88477980.

The previous prime is 88477973. The next prime is 88478009. The reversal of 88477981 is 18977488.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86025625 + 2452356 = 9275^2 + 1566^2 .

It is a cyclic number.

It is not a de Polignac number, because 88477981 - 2³ = 88477973 is a prime.

It is a super-2 number, since 2×88477981² = 15656706243672722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88477931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44238990 + 44238991.

It is an arithmetic number, because the mean of its divisors is an integer number (44238991).

Almost surely, 2^88477981 is an apocalyptic number.

It is an amenable number.

88477981 is a deficient number, since it is larger than the sum of its proper divisors (1).

88477981 is an equidigital number, since it uses as much as digits as its factorization.

88477981 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 88477981 is about 9406.2734916650. The cubic root of 88477981 is about 445.5998827957.

The spelling of 88477981 in words is "eighty-eight million, four hundred seventy-seven thousand, nine hundred eighty-one".