1461390899 has 2 divisors, whose sum is σ = 1461390900. Its totient is φ = 1461390898.

The previous prime is 1461390863. The next prime is 1461390911. The reversal of 1461390899 is 9980931641.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1461390899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1461390299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730695449 + 730695450.

It is an arithmetic number, because the mean of its divisors is an integer number (730695450).

Almost surely, 2^1461390899 is an apocalyptic number.

1461390899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461390899 is an equidigital number, since it uses as much as digits as its factorization.

1461390899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 1461390899 is about 38228.1427615834. The cubic root of 1461390899 is about 1134.8073311751.

The spelling of 1461390899 in words is "one billion, four hundred sixty-one million, three hundred ninety thousand, eight hundred ninety-nine".