403402273 has 2 divisors, whose sum is σ = 403402274. Its totient is φ = 403402272.

The previous prime is 403402261. The next prime is 403402277. The reversal of 403402273 is 372204304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228977424 + 174424849 = 15132^2 + 13207^2 .

It is a cyclic number.

It is not a de Polignac number, because 403402273 - 2¹³ = 403394081 is a prime.

It is a super-4 number, since 4×403402273⁴ (a number of 36 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (403402277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201701136 + 201701137.

It is an arithmetic number, because the mean of its divisors is an integer number (201701137).

Almost surely, 2^403402273 is an apocalyptic number.

It is an amenable number.

403402273 is a deficient number, since it is larger than the sum of its proper divisors (1).

403402273 is an equidigital number, since it uses as much as digits as its factorization.

403402273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 403402273 is about 20084.8767235450. The cubic root of 403402273 is about 738.8894182127.

Adding to 403402273 its reverse (372204304), we get a palindrome (775606577).

The spelling of 403402273 in words is "four hundred three million, four hundred two thousand, two hundred seventy-three".