139098403 has 4 divisors (see below), whose sum is σ = 147280680. Its totient is φ = 130916128.

The previous prime is 139098391. The next prime is 139098419. The reversal of 139098403 is 304890931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139098403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139098433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4091113 + ... + 4091146.

It is an arithmetic number, because the mean of its divisors is an integer number (36820170).

Almost surely, 2^139098403 is an apocalyptic number.

139098403 is a deficient number, since it is larger than the sum of its proper divisors (8182277).

139098403 is an equidigital number, since it uses as much as digits as its factorization.

139098403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8182276.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 139098403 is about 11793.9986009835. The cubic root of 139098403 is about 518.1323571181.

The spelling of 139098403 in words is "one hundred thirty-nine million, ninety-eight thousand, four hundred three".