405292493 has 2 divisors, whose sum is σ = 405292494. Its totient is φ = 405292492.

The previous prime is 405292471. The next prime is 405292541. The reversal of 405292493 is 394292504.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403326889 + 1965604 = 20083^2 + 1402^2 .

It is a cyclic number.

It is not a de Polignac number, because 405292493 - 2¹² = 405288397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405232493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202646246 + 202646247.

It is an arithmetic number, because the mean of its divisors is an integer number (202646247).

Almost surely, 2^405292493 is an apocalyptic number.

It is an amenable number.

405292493 is a deficient number, since it is larger than the sum of its proper divisors (1).

405292493 is an equidigital number, since it uses as much as digits as its factorization.

405292493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 405292493 is about 20131.8775329079. The cubic root of 405292493 is about 740.0416904927.

The spelling of 405292493 in words is "four hundred five million, two hundred ninety-two thousand, four hundred ninety-three".