139886438 has 8 divisors (see below), whose sum is σ = 222172632. Its totient is φ = 65828896.

The previous prime is 139886431. The next prime is 139886447. The reversal of 139886438 is 834688931.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139886431) 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, 2057120 + ... + 2057187.

It is an arithmetic number, because the mean of its divisors is an integer number (27771579).

Almost surely, 2^139886438 is an apocalyptic number.

139886438 is a deficient number, since it is larger than the sum of its proper divisors (82286194).

139886438 is a wasteful number, since it uses less digits than its factorization.

139886438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4114326.

The product of its digits is 995328, while the sum is 50.

The square root of 139886438 is about 11827.3597222711. The cubic root of 139886438 is about 519.1089745838.

The spelling of 139886438 in words is "one hundred thirty-nine million, eight hundred eighty-six thousand, four hundred thirty-eight".