402271873 has 2 divisors, whose sum is σ = 402271874. Its totient is φ = 402271872.

The previous prime is 402271861. The next prime is 402271879. The reversal of 402271873 is 378172204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284158449 + 118113424 = 16857^2 + 10868^2 .

It is a cyclic number.

It is not a de Polignac number, because 402271873 - 2¹³ = 402263681 is a prime.

It is not a weakly prime, because it can be changed into another prime (402271879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201135936 + 201135937.

It is an arithmetic number, because the mean of its divisors is an integer number (201135937).

Almost surely, 2^402271873 is an apocalyptic number.

It is an amenable number.

402271873 is a deficient number, since it is larger than the sum of its proper divisors (1).

402271873 is an equidigital number, since it uses as much as digits as its factorization.

402271873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 402271873 is about 20056.7164062316. The cubic root of 402271873 is about 738.1986090362.

The spelling of 402271873 in words is "four hundred two million, two hundred seventy-one thousand, eight hundred seventy-three".