1405950646 has 8 divisors (see below), whose sum is σ = 2140402680. Its totient is φ = 692483088.

The previous prime is 1405950617. The next prime is 1405950649. The reversal of 1405950646 is 6460595041.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1405950599 and 1405950608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405950649) 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, 5245951 + ... + 5246218.

It is an arithmetic number, because the mean of its divisors is an integer number (267550335).

Almost surely, 2^1405950646 is an apocalyptic number.

1405950646 is a deficient number, since it is larger than the sum of its proper divisors (734452034).

1405950646 is a wasteful number, since it uses less digits than its factorization.

1405950646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10492238.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 1405950646 is about 37496.0084008952. The cubic root of 1405950646 is about 1120.2716831347.

It can be divided in two parts, 1405950 and 646, that added together give a square (1406596 = 1186²).

The spelling of 1405950646 in words is "one billion, four hundred five million, nine hundred fifty thousand, six hundred forty-six".