402248336791 has 4 divisors (see below), whose sum is σ = 459712384912. Its totient is φ = 344784288672.

The previous prime is 402248336771. The next prime is 402248336801. The reversal of 402248336791 is 197633842204.

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

It is a cyclic number.

It is not a de Polignac number, because 402248336791 - 2¹⁵ = 402248304023 is a prime.

It is a super-2 number, since 2×402248336791² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402248336761) 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, 28732024050 + ... + 28732024063.

It is an arithmetic number, because the mean of its divisors is an integer number (114928096228).

Almost surely, 2^402248336791 is an apocalyptic number.

402248336791 is a deficient number, since it is larger than the sum of its proper divisors (57464048121).

402248336791 is an equidigital number, since it uses as much as digits as its factorization.

402248336791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57464048120.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 402248336791 in words is "four hundred two billion, two hundred forty-eight million, three hundred thirty-six thousand, seven hundred ninety-one".