88406729 has 4 divisors (see below), whose sum is σ = 88426260. Its totient is φ = 88387200.

The previous prime is 88406719. The next prime is 88406771. The reversal of 88406729 is 92760488.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44582329 + 43824400 = 6677^2 + 6620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88406729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88406729.

It is not an unprimeable number, because it can be changed into a prime (88406719) 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, 929 + ... + 13329.

It is an arithmetic number, because the mean of its divisors is an integer number (22106565).

Almost surely, 2^88406729 is an apocalyptic number.

It is an amenable number.

88406729 is a deficient number, since it is larger than the sum of its proper divisors (19531).

88406729 is a wasteful number, since it uses less digits than its factorization.

88406729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19530.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 88406729 is about 9402.4852565691. The cubic root of 88406729 is about 445.4802356658.

The spelling of 88406729 in words is "eighty-eight million, four hundred six thousand, seven hundred twenty-nine".