139367081 has 8 divisors (see below), whose sum is σ = 160687104. Its totient is φ = 118399680.

The previous prime is 139367047. The next prime is 139367083. The reversal of 139367081 is 180763931.

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

It is not a de Polignac number, because 139367081 - 2¹⁸ = 139104937 is a prime.

It is a super-2 number, since 2×139367081² = 38846366532921122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139367083) 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, 87305 + ... + 88886.

It is an arithmetic number, because the mean of its divisors is an integer number (20085888).

Almost surely, 2^139367081 is an apocalyptic number.

It is an amenable number.

139367081 is a deficient number, since it is larger than the sum of its proper divisors (21320023).

139367081 is a wasteful number, since it uses less digits than its factorization.

139367081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176311.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 139367081 is about 11805.3835600543. The cubic root of 139367081 is about 518.4657451533.

The spelling of 139367081 in words is "one hundred thirty-nine million, three hundred sixty-seven thousand, eighty-one".