103639963 has 8 divisors (see below), whose sum is σ = 120680928. Its totient is φ = 87157824.

The previous prime is 103639961. The next prime is 103639967. The reversal of 103639963 is 369936301.

It is a happy number.

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 103639963 - 2¹ = 103639961 is a prime.

It is a super-3 number, since 3×103639963³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103639961) 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, 139306 + ... + 140047.

It is an arithmetic number, because the mean of its divisors is an integer number (15085116).

Almost surely, 2^103639963 is an apocalyptic number.

103639963 is a deficient number, since it is larger than the sum of its proper divisors (17040965).

103639963 is an equidigital number, since it uses as much as digits as its factorization.

103639963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279413.

The product of its (nonzero) digits is 78732, while the sum is 40.

The square root of 103639963 is about 10180.3714568772. The cubic root of 103639963 is about 469.7236386472.

The spelling of 103639963 in words is "one hundred three million, six hundred thirty-nine thousand, nine hundred sixty-three".