1395909723 has 16 divisors (see below), whose sum is σ = 2031844640. Its totient is φ = 847252224.

The previous prime is 1395909719. The next prime is 1395909737. The reversal of 1395909723 is 3279095931.

It is not a de Polignac number, because 1395909723 - 2² = 1395909719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1395909793) 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 15 ways as a sum of consecutive naturals, for example, 242308 + ... + 248001.

It is an arithmetic number, because the mean of its divisors is an integer number (126990290).

Almost surely, 2^1395909723 is an apocalyptic number.

1395909723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1395909723 is a deficient number, since it is larger than the sum of its proper divisors (635934917).

1395909723 is a wasteful number, since it uses less digits than its factorization.

1395909723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490398.

The product of its (nonzero) digits is 459270, while the sum is 48.

The square root of 1395909723 is about 37361.8752607521. The cubic root of 1395909723 is about 1117.5984156277.

The spelling of 1395909723 in words is "one billion, three hundred ninety-five million, nine hundred nine thousand, seven hundred twenty-three".