1392303949 has 4 divisors (see below), whose sum is σ = 1440314460. Its totient is φ = 1344293440.

The previous prime is 1392303943. The next prime is 1392303959. The reversal of 1392303949 is 9493032931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9493032931 = 73 ⋅130041547.

It can be written as a sum of positive squares in 2 ways, for example, as 324648324 + 1067655625 = 18018^2 + 32675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1392303949 - 2⁵ = 1392303917 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 (1392303943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24005212 + ... + 24005269.

It is an arithmetic number, because the mean of its divisors is an integer number (360078615).

Almost surely, 2^1392303949 is an apocalyptic number.

It is an amenable number.

1392303949 is a deficient number, since it is larger than the sum of its proper divisors (48010511).

1392303949 is an equidigital number, since it uses as much as digits as its factorization.

1392303949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48010510.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 1392303949 is about 37313.5893341823. The cubic root of 1392303949 is about 1116.6352964926.

The spelling of 1392303949 in words is "one billion, three hundred ninety-two million, three hundred three thousand, nine hundred forty-nine".