139876441 has 2 divisors, whose sum is σ = 139876442. Its totient is φ = 139876440.

The previous prime is 139876349. The next prime is 139876469. The reversal of 139876441 is 144678931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136796416 + 3080025 = 11696^2 + 1755^2 .

It is a cyclic number.

It is not a de Polignac number, because 139876441 - 2⁷ = 139876313 is a prime.

It is not a weakly prime, because it can be changed into another prime (139876141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69938220 + 69938221.

It is an arithmetic number, because the mean of its divisors is an integer number (69938221).

Almost surely, 2^139876441 is an apocalyptic number.

It is an amenable number.

139876441 is a deficient number, since it is larger than the sum of its proper divisors (1).

139876441 is an equidigital number, since it uses as much as digits as its factorization.

139876441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 139876441 is about 11826.9370929248. The cubic root of 139876441 is about 519.0966082288.

It can be divided in two parts, 139876 and 441, that multiplied together give a square (61685316 = 7854²).

The spelling of 139876441 in words is "one hundred thirty-nine million, eight hundred seventy-six thousand, four hundred forty-one".