139441903 has 8 divisors (see below), whose sum is σ = 142833600. Its totient is φ = 136068000.

The previous prime is 139441901. The next prime is 139441927. The reversal of 139441903 is 309144931.

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 139441903 - 2¹ = 139441901 is a prime.

It is a super-2 number, since 2×139441903² = 38888088624522818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139441901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12153 + ... + 20653.

It is an arithmetic number, because the mean of its divisors is an integer number (17854200).

Almost surely, 2^139441903 is an apocalyptic number.

139441903 is a deficient number, since it is larger than the sum of its proper divisors (3391697).

139441903 is an equidigital number, since it uses as much as digits as its factorization.

139441903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8897.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 139441903 is about 11808.5521127698. The cubic root of 139441903 is about 518.5585114498.

The spelling of 139441903 in words is "one hundred thirty-nine million, four hundred forty-one thousand, nine hundred three".