409278043 has 6 divisors (see below), whose sum is σ = 434769716. Its totient is φ = 385202592.

The previous prime is 409278041. The next prime is 409278061. The reversal of 409278043 is 340872904.

It is a happy number.

It is not a de Polignac number, because 409278043 - 2¹ = 409278041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 409277993 and 409278011.

It is not an unprimeable number, because it can be changed into a prime (409278041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 707805 + ... + 708382.

Almost surely, 2^409278043 is an apocalyptic number.

409278043 is a deficient number, since it is larger than the sum of its proper divisors (25491673).

409278043 is a wasteful number, since it uses less digits than its factorization.

409278043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416221 (or 1416204 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 409278043 is about 20230.6214190271. The cubic root of 409278043 is about 742.4595800796.

The spelling of 409278043 in words is "four hundred nine million, two hundred seventy-eight thousand, forty-three".