139348402 has 4 divisors (see below), whose sum is σ = 209022606. Its totient is φ = 69674200.

The previous prime is 139348399. The next prime is 139348403. The reversal of 139348402 is 204843931.

139348402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204843931 = 17 ⋅12049643.

It can be written as a sum of positive squares in only one way, i.e., 102394161 + 36954241 = 10119^2 + 6079^2 .

It is not an unprimeable number, because it can be changed into a prime (139348403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34837099 + ... + 34837102.

Almost surely, 2^139348402 is an apocalyptic number.

139348402 is a deficient number, since it is larger than the sum of its proper divisors (69674204).

139348402 is an equidigital number, since it uses as much as digits as its factorization.

139348402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69674203.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 139348402 is about 11804.5924114304. The cubic root of 139348402 is about 518.4425812558.

The spelling of 139348402 in words is "one hundred thirty-nine million, three hundred forty-eight thousand, four hundred two".