406708388 has 6 divisors (see below), whose sum is σ = 711739686. Its totient is φ = 203354192.

The previous prime is 406708387. The next prime is 406708469. The reversal of 406708388 is 883807604.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 406103104 + 605284 = 20152^2 + 778^2 .

It is not an unprimeable number, because it can be changed into a prime (406708387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50838545 + ... + 50838552.

It is an arithmetic number, because the mean of its divisors is an integer number (118623281).

Almost surely, 2^406708388 is an apocalyptic number.

It is an amenable number.

406708388 is a deficient number, since it is larger than the sum of its proper divisors (305031298).

406708388 is a wasteful number, since it uses less digits than its factorization.

406708388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101677101 (or 101677099 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 406708388 is about 20167.0123716925. The cubic root of 406708388 is about 740.9024708898.

The spelling of 406708388 in words is "four hundred six million, seven hundred eight thousand, three hundred eighty-eight".