139001406 has 8 divisors (see below), whose sum is σ = 278002824. Its totient is φ = 46333800.

The previous prime is 139001399. The next prime is 139001411. The reversal of 139001406 is 604100931.

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

139001406 is an admirable 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, 11583445 + ... + 11583456.

It is an arithmetic number, because the mean of its divisors is an integer number (34750353).

Almost surely, 2^139001406 is an apocalyptic number.

139001406 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.

139001406 is a wasteful number, since it uses less digits than its factorization.

139001406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23166906.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 139001406 is about 11789.8857500826. The cubic root of 139001406 is about 518.0118933083.

The spelling of 139001406 in words is "one hundred thirty-nine million, one thousand, four hundred six".