1489903949 has 4 divisors (see below), whose sum is σ = 1492265760. Its totient is φ = 1487542140.

The previous prime is 1489903903. The next prime is 1489903951. The reversal of 1489903949 is 9493099841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1489903949 - 2²⁰ = 1488855373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1489903894 and 1489903903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489903969) 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, 1179959 + ... + 1181220.

It is an arithmetic number, because the mean of its divisors is an integer number (373066440).

Almost surely, 2^1489903949 is an apocalyptic number.

It is an amenable number.

1489903949 is a deficient number, since it is larger than the sum of its proper divisors (2361811).

1489903949 is an equidigital number, since it uses as much as digits as its factorization.

1489903949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361810.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The square root of 1489903949 is about 38599.2739439487. The cubic root of 1489903949 is about 1142.1402159136.

The spelling of 1489903949 in words is "one billion, four hundred eighty-nine million, nine hundred three thousand, nine hundred forty-nine".