1492439749 has 4 divisors (see below), whose sum is σ = 1492767340. Its totient is φ = 1492112160.

The previous prime is 1492439747. The next prime is 1492439771. The reversal of 1492439749 is 9479342941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 384748225 + 1107691524 = 19615^2 + 33282^2 .

It is a cyclic number.

It is not a de Polignac number, because 1492439749 - 2¹ = 1492439747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1492439696 and 1492439705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1492439747) 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, 156864 + ... + 166105.

It is an arithmetic number, because the mean of its divisors is an integer number (373191835).

Almost surely, 2^1492439749 is an apocalyptic number.

It is an amenable number.

1492439749 is a deficient number, since it is larger than the sum of its proper divisors (327591).

1492439749 is an equidigital number, since it uses as much as digits as its factorization.

1492439749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327590.

The product of its digits is 1959552, while the sum is 52.

The square root of 1492439749 is about 38632.1077473130. The cubic root of 1492439749 is about 1142.7878186424.

The spelling of 1492439749 in words is "one billion, four hundred ninety-two million, four hundred thirty-nine thousand, seven hundred forty-nine".