406474739 has 4 divisors (see below), whose sum is σ = 443427000. Its totient is φ = 369522480.

The previous prime is 406474693. The next prime is 406474793. The reversal of 406474739 is 937474604.

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 406474739 - 2⁸ = 406474483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 406474739.

It is not an unprimeable number, because it can be changed into a prime (406474339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18476114 + ... + 18476135.

It is an arithmetic number, because the mean of its divisors is an integer number (110856750).

Almost surely, 2^406474739 is an apocalyptic number.

406474739 is a deficient number, since it is larger than the sum of its proper divisors (36952261).

406474739 is a wasteful number, since it uses less digits than its factorization.

406474739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36952260.

The product of its (nonzero) digits is 508032, while the sum is 44.

The square root of 406474739 is about 20161.2186883631. The cubic root of 406474739 is about 740.7605639058.

The spelling of 406474739 in words is "four hundred six million, four hundred seventy-four thousand, seven hundred thirty-nine".