139570489 has 4 divisors (see below), whose sum is σ = 140025424. Its totient is φ = 139115556.

The previous prime is 139570471. The next prime is 139570507. The reversal of 139570489 is 984075931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (139570471) and next prime (139570507).

It is a cyclic number.

It is not a de Polignac number, because 139570489 - 2⁹ = 139569977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139570439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227007 + ... + 227620.

It is an arithmetic number, because the mean of its divisors is an integer number (35006356).

Almost surely, 2^139570489 is an apocalyptic number.

It is an amenable number.

139570489 is a deficient number, since it is larger than the sum of its proper divisors (454935).

139570489 is an equidigital number, since it uses as much as digits as its factorization.

139570489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454934.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 139570489 is about 11813.9954714737. The cubic root of 139570489 is about 518.7178582882.

The spelling of 139570489 in words is "one hundred thirty-nine million, five hundred seventy thousand, four hundred eighty-nine".