88140749 has 16 divisors (see below), whose sum is σ = 92845440. Its totient is φ = 83603520.

The previous prime is 88140743. The next prime is 88140757. The reversal of 88140749 is 94704188.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88140749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88140743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221819 + ... + 222215.

It is an arithmetic number, because the mean of its divisors is an integer number (5802840).

Almost surely, 2^88140749 is an apocalyptic number.

It is an amenable number.

88140749 is a deficient number, since it is larger than the sum of its proper divisors (4704691).

88140749 is a wasteful number, since it uses less digits than its factorization.

88140749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 88140749 is about 9388.3304692581. The cubic root of 88140749 is about 445.0330304145.

The spelling of 88140749 in words is "eighty-eight million, one hundred forty thousand, seven hundred forty-nine".