139364403 has 4 divisors (see below), whose sum is σ = 185819208. Its totient is φ = 92909600.

The previous prime is 139364399. The next prime is 139364413. The reversal of 139364403 is 304463931.

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

It is a cyclic number.

It is not a de Polignac number, because 139364403 - 2² = 139364399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139364413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23227398 + ... + 23227403.

It is an arithmetic number, because the mean of its divisors is an integer number (46454802).

Almost surely, 2^139364403 is an apocalyptic number.

139364403 is a deficient number, since it is larger than the sum of its proper divisors (46454805).

139364403 is an equidigital number, since it uses as much as digits as its factorization.

139364403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46454804.

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

The square root of 139364403 is about 11805.2701366805. The cubic root of 139364403 is about 518.4624242826.

The spelling of 139364403 in words is "one hundred thirty-nine million, three hundred sixty-four thousand, four hundred three".