402745027393 has 4 divisors (see below), whose sum is σ = 410343990228. Its totient is φ = 395146064560.

The previous prime is 402745027309. The next prime is 402745027411. The reversal of 402745027393 is 393720547204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 317625797889 + 85119229504 = 563583^2 + 291752^2 .

It is a cyclic number.

It is not a de Polignac number, because 402745027393 - 2⁹ = 402745026881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402745027093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3799481338 + ... + 3799481443.

It is an arithmetic number, because the mean of its divisors is an integer number (102585997557).

Almost surely, 2^402745027393 is an apocalyptic number.

It is an amenable number.

402745027393 is a deficient number, since it is larger than the sum of its proper divisors (7598962835).

402745027393 is an equidigital number, since it uses as much as digits as its factorization.

402745027393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7598962834.

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 402745027393 in words is "four hundred two billion, seven hundred forty-five million, twenty-seven thousand, three hundred ninety-three".