406387426 has 8 divisors (see below), whose sum is σ = 609706944. Its totient is φ = 203151780.

The previous prime is 406387381. The next prime is 406387433. The reversal of 406387426 is 624783604.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6990 + ... + 29353.

It is an arithmetic number, because the mean of its divisors is an integer number (76213368).

Almost surely, 2^406387426 is an apocalyptic number.

406387426 is a deficient number, since it is larger than the sum of its proper divisors (203319518).

406387426 is a wasteful number, since it uses less digits than its factorization.

406387426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41936.

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 406387426 is about 20159.0532019735. The cubic root of 406387426 is about 740.7075202990.

The spelling of 406387426 in words is "four hundred six million, three hundred eighty-seven thousand, four hundred twenty-six".