139456 has 14 divisors (see below), whose sum is σ = 276860. Its totient is φ = 69696.

The previous prime is 139439. The next prime is 139457. The reversal of 139456 is 654931.

139456 is nontrivially palindromic in base 11.

It is a d-powerful number, because it can be written as 1 + 3¹⁰ + 4⁴ + 9³ + 5⁷ + 6⁴ .

It is not an unprimeable number, because it can be changed into a prime (139457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1026 + ... + 1153.

2¹³⁹⁴⁵⁶ is an apocalyptic number.

139456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139456 is a deficient number, since it is larger than the sum of its proper divisors (137404).

139456 is an equidigital number, since it uses as much as digits as its factorization.

139456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2181 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 139456 is about 373.4380805435. The cubic root of 139456 is about 51.8575985568.

It can be divided in two parts, 139 and 456, that added together give a palindrome (595).

The spelling of 139456 in words is "one hundred thirty-nine thousand, four hundred fifty-six".