88121739 has 4 divisors (see below), whose sum is σ = 117495656. Its totient is φ = 58747824.

The previous prime is 88121723. The next prime is 88121767. The reversal of 88121739 is 93712188.

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

It is not a de Polignac number, because 88121739 - 2⁴ = 88121723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 88121697 and 88121706.

It is not an unprimeable number, because it can be changed into a prime (88121779) 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, 14686954 + ... + 14686959.

It is an arithmetic number, because the mean of its divisors is an integer number (29373914).

Almost surely, 2^88121739 is an apocalyptic number.

88121739 is a deficient number, since it is larger than the sum of its proper divisors (29373917).

88121739 is a wasteful number, since it uses less digits than its factorization.

88121739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29373916.

The product of its digits is 24192, while the sum is 39.

The square root of 88121739 is about 9387.3179875830. The cubic root of 88121739 is about 445.0010335371.

The spelling of 88121739 in words is "eighty-eight million, one hundred twenty-one thousand, seven hundred thirty-nine".