138897803 has 16 divisors (see below), whose sum is σ = 161533440. Its totient is φ = 118032000.

The previous prime is 138897799. The next prime is 138897823. The reversal of 138897803 is 308798831.

It is a cyclic number.

It is not a de Polignac number, because 138897803 - 2² = 138897799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138897823) 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 15 ways as a sum of consecutive naturals, for example, 25778 + ... + 30696.

It is an arithmetic number, because the mean of its divisors is an integer number (10095840).

Almost surely, 2^138897803 is an apocalyptic number.

138897803 is a deficient number, since it is larger than the sum of its proper divisors (22635637).

138897803 is a wasteful number, since it uses less digits than its factorization.

138897803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 138897803 is about 11785.4912074126. The cubic root of 138897803 is about 517.8831633749.

The spelling of 138897803 in words is "one hundred thirty-eight million, eight hundred ninety-seven thousand, eight hundred three".