400402239983 has 2 divisors, whose sum is σ = 400402239984. Its totient is φ = 400402239982.

The previous prime is 400402239977. The next prime is 400402240009. The reversal of 400402239983 is 389932204004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400402239983 - 2¹⁸ = 400401977839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400402235983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200201119991 + 200201119992.

It is an arithmetic number, because the mean of its divisors is an integer number (200201119992).

Almost surely, 2^400402239983 is an apocalyptic number.

400402239983 is a deficient number, since it is larger than the sum of its proper divisors (1).

400402239983 is an equidigital number, since it uses as much as digits as its factorization.

400402239983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 400402239983 in words is "four hundred billion, four hundred two million, two hundred thirty-nine thousand, nine hundred eighty-three".