406492399 has 2 divisors, whose sum is σ = 406492400. Its totient is φ = 406492398.

The previous prime is 406492393. The next prime is 406492439. The reversal of 406492399 is 993294604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406492399 - 2¹³ = 406484207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406492393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203246199 + 203246200.

It is an arithmetic number, because the mean of its divisors is an integer number (203246200).

Almost surely, 2^406492399 is an apocalyptic number.

406492399 is a deficient number, since it is larger than the sum of its proper divisors (1).

406492399 is an equidigital number, since it uses as much as digits as its factorization.

406492399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 406492399 is about 20161.6566531622. The cubic root of 406492399 is about 740.7712916263.

The spelling of 406492399 in words is "four hundred six million, four hundred ninety-two thousand, three hundred ninety-nine".