406743251 has 2 divisors, whose sum is σ = 406743252. Its totient is φ = 406743250.

The previous prime is 406743221. The next prime is 406743269. The reversal of 406743251 is 152347604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406743251 - 2²⁶ = 339634387 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (406743221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203371625 + 203371626.

It is an arithmetic number, because the mean of its divisors is an integer number (203371626).

Almost surely, 2^406743251 is an apocalyptic number.

406743251 is a deficient number, since it is larger than the sum of its proper divisors (1).

406743251 is an equidigital number, since it uses as much as digits as its factorization.

406743251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 406743251 is about 20167.8767102539. The cubic root of 406743251 is about 740.9236403121.

The spelling of 406743251 in words is "four hundred six million, seven hundred forty-three thousand, two hundred fifty-one".