408145357 has 2 divisors, whose sum is σ = 408145358. Its totient is φ = 408145356.

The previous prime is 408145277. The next prime is 408145429. The reversal of 408145357 is 753541804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407474596 + 670761 = 20186^2 + 819^2 .

It is a cyclic number.

It is not a de Polignac number, because 408145357 - 2¹⁹ = 407621069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408145457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204072678 + 204072679.

It is an arithmetic number, because the mean of its divisors is an integer number (204072679).

Almost surely, 2^408145357 is an apocalyptic number.

It is an amenable number.

408145357 is a deficient number, since it is larger than the sum of its proper divisors (1).

408145357 is an equidigital number, since it uses as much as digits as its factorization.

408145357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 408145357 is about 20202.6076782182. The cubic root of 408145357 is about 741.7740228441.

The spelling of 408145357 in words is "four hundred eight million, one hundred forty-five thousand, three hundred fifty-seven".