1461399839 has 6 divisors (see below), whose sum is σ = 1542364200. Its totient is φ = 1384483716.

The previous prime is 1461399761. The next prime is 1461399881. The reversal of 1461399839 is 9389931641.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1461399839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461369839) 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 5 ways as a sum of consecutive naturals, for example, 2023739 + ... + 2024460.

It is an arithmetic number, because the mean of its divisors is an integer number (257060700).

Almost surely, 2^1461399839 is an apocalyptic number.

1461399839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1461399839 is a deficient number, since it is larger than the sum of its proper divisors (80964361).

1461399839 is an equidigital number, since it uses as much as digits as its factorization.

1461399839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048237 (or 4048218 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 53.

The square root of 1461399839 is about 38228.2596909668. The cubic root of 1461399839 is about 1134.8096452165.

The spelling of 1461399839 in words is "one billion, four hundred sixty-one million, three hundred ninety-nine thousand, eight hundred thirty-nine".