138747403 has 8 divisors (see below), whose sum is σ = 142649136. Its totient is φ = 134870400.

The previous prime is 138747391. The next prime is 138747439. The reversal of 138747403 is 304747831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138747403 - 2⁹ = 138746891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138747503) 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 7 ways as a sum of consecutive naturals, for example, 5500 + ... + 17542.

It is an arithmetic number, because the mean of its divisors is an integer number (17831142).

Almost surely, 2^138747403 is an apocalyptic number.

138747403 is a deficient number, since it is larger than the sum of its proper divisors (3901733).

138747403 is a wasteful number, since it uses less digits than its factorization.

138747403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12365.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 138747403 is about 11779.1087523632. The cubic root of 138747403 is about 517.6961727573.

The spelling of 138747403 in words is "one hundred thirty-eight million, seven hundred forty-seven thousand, four hundred three".