402471897293 has 2 divisors, whose sum is σ = 402471897294. Its totient is φ = 402471897292.

The previous prime is 402471897271. The next prime is 402471897301. The reversal of 402471897293 is 392798174204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305435286244 + 97036611049 = 552662^2 + 311507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402471897293 is a prime.

It is a super-2 number, since 2×402471897293² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402471897263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201235948646 + 201235948647.

It is an arithmetic number, because the mean of its divisors is an integer number (201235948647).

Almost surely, 2^402471897293 is an apocalyptic number.

It is an amenable number.

402471897293 is a deficient number, since it is larger than the sum of its proper divisors (1).

402471897293 is an equidigital number, since it uses as much as digits as its factorization.

402471897293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 402471897293 in words is "four hundred two billion, four hundred seventy-one million, eight hundred ninety-seven thousand, two hundred ninety-three".