88139919 has 8 divisors (see below), whose sum is σ = 134308480. Its totient is φ = 50365656.

The previous prime is 88139911. The next prime is 88139927. The reversal of 88139919 is 91993188.

It is an interprime number because it is at equal distance from previous prime (88139911) and next prime (88139927).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 88139919 - 2³ = 88139911 is a prime.

It is a super-2 number, since 2×88139919² = 15537290642653122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88139911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2098549 + ... + 2098590.

It is an arithmetic number, because the mean of its divisors is an integer number (16788560).

Almost surely, 2^88139919 is an apocalyptic number.

88139919 is a deficient number, since it is larger than the sum of its proper divisors (46168561).

88139919 is a wasteful number, since it uses less digits than its factorization.

88139919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4197149.

The product of its digits is 139968, while the sum is 48.

The square root of 88139919 is about 9388.2862653415. The cubic root of 88139919 is about 445.0316334875.

The spelling of 88139919 in words is "eighty-eight million, one hundred thirty-nine thousand, nine hundred nineteen".