1408069397641 has 3 divisors (see below), whose sum is σ = 1408070584263. Its totient is φ = 1408068211020.

The previous prime is 1408069397633. The next prime is 1408069397687. The reversal of 1408069397641 is 1467939608041.

The square root of 1408069397641 is 1186621.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1373984853241 + 34084544400 = 1172171^2 + 184620^2 .

It is not a de Polignac number, because 1408069397641 - 2³ = 1408069397633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1408069395641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 593311 + ... + 1779931.

It is an arithmetic number, because the mean of its divisors is an integer number (469356861421).

Almost surely, 2^{1408069397641} is an apocalyptic number.

1408069397641 is the 1186621-st square number.

1408069397641 is the 593311-st centered octagonal number.

It is an amenable number.

1408069397641 is a deficient number, since it is larger than the sum of its proper divisors (1186622).

1408069397641 is an frugal number, since it uses more digits than its factorization.

1408069397641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373242 (or 1186621 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 1408069397641 in words is "one trillion, four hundred eight billion, sixty-nine million, three hundred ninety-seven thousand, six hundred forty-one".