406368253 has 2 divisors, whose sum is σ = 406368254. Its totient is φ = 406368252.

The previous prime is 406368229. The next prime is 406368283. The reversal of 406368253 is 352863604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329858244 + 76510009 = 18162^2 + 8747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406368253 is a prime.

It is a super-3 number, since 3×406368253³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406368283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203184126 + 203184127.

It is an arithmetic number, because the mean of its divisors is an integer number (203184127).

Almost surely, 2^406368253 is an apocalyptic number.

It is an amenable number.

406368253 is a deficient number, since it is larger than the sum of its proper divisors (1).

406368253 is an equidigital number, since it uses as much as digits as its factorization.

406368253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 406368253 is about 20158.5776531977. The cubic root of 406368253 is about 740.6958714735.

The spelling of 406368253 in words is "four hundred six million, three hundred sixty-eight thousand, two hundred fifty-three".