1427993723 has 6 divisors (see below), whose sum is σ = 1546289244. Its totient is φ = 1318147896.

The previous prime is 1427993719. The next prime is 1427993729. The reversal of 1427993723 is 3273997241.

It is not a de Polignac number, because 1427993723 - 2² = 1427993719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1427993729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4224665 + ... + 4225002.

It is an arithmetic number, because the mean of its divisors is an integer number (257714874).

Almost surely, 2^1427993723 is an apocalyptic number.

1427993723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1427993723 is a deficient number, since it is larger than the sum of its proper divisors (118295521).

1427993723 is an equidigital number, since it uses as much as digits as its factorization.

1427993723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8449693 (or 8449680 counting only the distinct ones).

The product of its digits is 571536, while the sum is 47.

The square root of 1427993723 is about 37788.8042017738. The cubic root of 1427993723 is about 1126.0960440503.

The spelling of 1427993723 in words is "one billion, four hundred twenty-seven million, nine hundred ninety-three thousand, seven hundred twenty-three".