139343406 has 16 divisors (see below), whose sum is σ = 286219344. Its totient is φ = 45192384.

The previous prime is 139343401. The next prime is 139343411. The reversal of 139343406 is 604343931.

It is an interprime number because it is at equal distance from previous prime (139343401) and next prime (139343411).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139343401) 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 7 ways as a sum of consecutive naturals, for example, 313615 + ... + 314058.

It is an arithmetic number, because the mean of its divisors is an integer number (17888709).

Almost surely, 2^139343406 is an apocalyptic number.

139343406 is an abundant number, since it is smaller than the sum of its proper divisors (146875938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139343406 is a wasteful number, since it uses less digits than its factorization.

139343406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627715.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 139343406 is about 11804.3807969753. The cubic root of 139343406 is about 518.4363853467.

The spelling of 139343406 in words is "one hundred thirty-nine million, three hundred forty-three thousand, four hundred six".