88139406 has 8 divisors (see below), whose sum is σ = 176278824. Its totient is φ = 29379800.

The previous prime is 88139357. The next prime is 88139437. The reversal of 88139406 is 60493188.

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

88139406 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7344945 + ... + 7344956.

It is an arithmetic number, because the mean of its divisors is an integer number (22034853).

Almost surely, 2^88139406 is an apocalyptic number.

88139406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

88139406 is a wasteful number, since it uses less digits than its factorization.

88139406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14689906.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 88139406 is about 9388.2589440215. The cubic root of 88139406 is about 445.0307700812.

The spelling of 88139406 in words is "eighty-eight million, one hundred thirty-nine thousand, four hundred six".