406366787 has 4 divisors (see below), whose sum is σ = 406448640. Its totient is φ = 406284936.

The previous prime is 406366781. The next prime is 406366789. The reversal of 406366787 is 787663604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 406366787 - 2⁴ = 406366771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406366781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32963 + ... + 43580.

It is an arithmetic number, because the mean of its divisors is an integer number (101612160).

Almost surely, 2^406366787 is an apocalyptic number.

406366787 is a deficient number, since it is larger than the sum of its proper divisors (81853).

406366787 is an equidigital number, since it uses as much as digits as its factorization.

406366787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81852.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 406366787 is about 20158.5412914725. The cubic root of 406366787 is about 740.6949807695.

The spelling of 406366787 in words is "four hundred six million, three hundred sixty-six thousand, seven hundred eighty-seven".