13440401994 has 16 divisors (see below), whose sum is σ = 28462027968. Its totient is φ = 4216596672.

The previous prime is 13440401993. The next prime is 13440402013. The reversal of 13440401994 is 49910404431.

It is not an unprimeable number, because it can be changed into a prime (13440401993) 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, 65884222 + ... + 65884425.

It is an arithmetic number, because the mean of its divisors is an integer number (1778876748).

Almost surely, 2^13440401994 is an apocalyptic number.

13440401994 is an abundant number, since it is smaller than the sum of its proper divisors (15021625974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13440401994 is a wasteful number, since it uses less digits than its factorization.

13440401994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131768669.

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 13440401994 in words is "thirteen billion, four hundred forty million, four hundred one thousand, nine hundred ninety-four".