1023859406 has 8 divisors (see below), whose sum is σ = 1564766424. Its totient is φ = 502270600.

The previous prime is 1023859399. The next prime is 1023859411. The reversal of 1023859406 is 6049583201.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1023859406.

It is a congruent number.

It is an unprimeable number.

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, 4829420 + ... + 4829631.

It is an arithmetic number, because the mean of its divisors is an integer number (195595803).

Almost surely, 2^1023859406 is an apocalyptic number.

1023859406 is a deficient number, since it is larger than the sum of its proper divisors (540907018).

1023859406 is an equidigital number, since it uses as much as digits as its factorization.

1023859406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9659106.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1023859406 is about 31997.8031433410. The cubic root of 1023859406 is about 1007.8907082889.

The spelling of 1023859406 in words is "one billion, twenty-three million, eight hundred fifty-nine thousand, four hundred six".