1401389430994 has 24 divisors (see below), whose sum is σ = 2449801579788. Its totient is φ = 599485289760.

The previous prime is 1401389430923. The next prime is 1401389430997. The reversal of 1401389430994 is 4990349831041.

It can be written as a sum of positive squares in 2 ways, for example, as 1393119893025 + 8269537969 = 1180305^2 + 90937^2 .

It is not an unprimeable number, because it can be changed into a prime (1401389430997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13163149 + ... + 13269184.

Almost surely, 2^{1401389430994} is an apocalyptic number.

1401389430994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1401389430994 is a deficient number, since it is larger than the sum of its proper divisors (1048412148794).

1401389430994 is a wasteful number, since it uses less digits than its factorization.

1401389430994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26432890 (or 26432883 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 1401389430994 in words is "one trillion, four hundred one billion, three hundred eighty-nine million, four hundred thirty thousand, nine hundred ninety-four".