1405450747 has 2 divisors, whose sum is σ = 1405450748. Its totient is φ = 1405450746.

The previous prime is 1405450723. The next prime is 1405450847. The reversal of 1405450747 is 7470545041.

It is a weak prime.

It is an emirp because it is prime and its reverse (7470545041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1405450747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1405450147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702725373 + 702725374.

It is an arithmetic number, because the mean of its divisors is an integer number (702725374).

Almost surely, 2^1405450747 is an apocalyptic number.

1405450747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405450747 is an equidigital number, since it uses as much as digits as its factorization.

1405450747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78400, while the sum is 37.

The square root of 1405450747 is about 37489.3417786976. The cubic root of 1405450747 is about 1120.1388930109.

Adding to 1405450747 its reverse (7470545041), we get a palindrome (8875995788).

The spelling of 1405450747 in words is "one billion, four hundred five million, four hundred fifty thousand, seven hundred forty-seven".