139603965 has 8 divisors (see below), whose sum is σ = 223366368. Its totient is φ = 74455440.

The previous prime is 139603927. The next prime is 139603967. The reversal of 139603965 is 569306931.

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

It is not a de Polignac number, because 139603965 - 2⁶ = 139603901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139603967) 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, 4653451 + ... + 4653480.

It is an arithmetic number, because the mean of its divisors is an integer number (27920796).

Almost surely, 2^139603965 is an apocalyptic number.

139603965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139603965 is a deficient number, since it is larger than the sum of its proper divisors (83762403).

139603965 is an equidigital number, since it uses as much as digits as its factorization.

139603965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9306939.

The product of its (nonzero) digits is 131220, while the sum is 42.

The square root of 139603965 is about 11815.4121807070. The cubic root of 139603965 is about 518.7593264883.

The spelling of 139603965 in words is "one hundred thirty-nine million, six hundred three thousand, nine hundred sixty-five".