1499400971 has 2 divisors, whose sum is σ = 1499400972. Its totient is φ = 1499400970.

The previous prime is 1499400943. The next prime is 1499401019. The reversal of 1499400971 is 1790049941.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1499400971 - 2⁶ = 1499400907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1499400271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 749700485 + 749700486.

It is an arithmetic number, because the mean of its divisors is an integer number (749700486).

Almost surely, 2^1499400971 is an apocalyptic number.

1499400971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1499400971 is an equidigital number, since it uses as much as digits as its factorization.

1499400971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 1499400971 is about 38722.0992586921. The cubic root of 1499400971 is about 1144.5618407024.

The spelling of 1499400971 in words is "one billion, four hundred ninety-nine million, four hundred thousand, nine hundred seventy-one".