406450387 has 4 divisors (see below), whose sum is σ = 464514736. Its totient is φ = 348386040.

The previous prime is 406450379. The next prime is 406450403. The reversal of 406450387 is 783054604.

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 406450387 - 2³ = 406450379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406450327) 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, 29032164 + ... + 29032177.

It is an arithmetic number, because the mean of its divisors is an integer number (116128684).

Almost surely, 2^406450387 is an apocalyptic number.

406450387 is a deficient number, since it is larger than the sum of its proper divisors (58064349).

406450387 is an equidigital number, since it uses as much as digits as its factorization.

406450387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58064348.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 406450387 is about 20160.6147475716. The cubic root of 406450387 is about 740.7457705622.

The spelling of 406450387 in words is "four hundred six million, four hundred fifty thousand, three hundred eighty-seven".