1392549241 has 8 divisors (see below), whose sum is σ = 1421939304. Its totient is φ = 1363438080.

The previous prime is 1392549161. The next prime is 1392549293. The reversal of 1392549241 is 1429452931.

It can be written as a sum of positive squares in 4 ways, for example, as 655155216 + 737394025 = 25596^2 + 27155^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1392549241 - 2⁷ = 1392549113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1392549194 and 1392549203.

It is not an unprimeable number, because it can be changed into a prime (1392549841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59620 + ... + 79621.

It is an arithmetic number, because the mean of its divisors is an integer number (177742413).

Almost surely, 2^1392549241 is an apocalyptic number.

It is an amenable number.

1392549241 is a deficient number, since it is larger than the sum of its proper divisors (29390063).

1392549241 is a wasteful number, since it uses less digits than its factorization.

1392549241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139451.

The product of its digits is 77760, while the sum is 40.

The square root of 1392549241 is about 37316.8760884402. The cubic root of 1392549241 is about 1116.7008678122.

The spelling of 1392549241 in words is "one billion, three hundred ninety-two million, five hundred forty-nine thousand, two hundred forty-one".