139071441 has 8 divisors (see below), whose sum is σ = 196336224. Its totient is φ = 87260480.

The previous prime is 139071391. The next prime is 139071461. The reversal of 139071441 is 144170931.

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

It is a cyclic number.

It is not a de Polignac number, because 139071441 - 2⁷ = 139071313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139071399 and 139071408.

It is not an unprimeable number, because it can be changed into a prime (139071461) 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, 1363395 + ... + 1363496.

It is an arithmetic number, because the mean of its divisors is an integer number (24542028).

Almost surely, 2^139071441 is an apocalyptic number.

It is an amenable number.

139071441 is a deficient number, since it is larger than the sum of its proper divisors (57264783).

139071441 is a wasteful number, since it uses less digits than its factorization.

139071441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726911.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 139071441 is about 11792.8555066193. The cubic root of 139071441 is about 518.0988777322.

The spelling of 139071441 in words is "one hundred thirty-nine million, seventy-one thousand, four hundred forty-one".