1273276489 has 9 divisors (see below), whose sum is σ = 1353225607. Its totient is φ = 1197806944.

The previous prime is 1273276409. The next prime is 1273276541. The reversal of 1273276489 is 9846723721.

It is a happy number.

The square root of 1273276489 is 35683.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 991305225 + 281971264 = 31485^2 + 16792^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1273276489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1273276409) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 605562 + ... + 607660.

Almost surely, 2^1273276489 is an apocalyptic number.

1273276489 is the 35683-rd square number.

1273276489 is the 17842-nd centered octagonal number.

It is an amenable number.

1273276489 is a deficient number, since it is larger than the sum of its proper divisors (79949118).

1273276489 is an frugal number, since it uses more digits than its factorization.

1273276489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232 (or 2116 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 49.

The cubic root of 1273276489 is about 1083.8626231798.

Multiplying 1273276489 by its sum of digits (49), we get a square (62390547961 = 249781²).

The spelling of 1273276489 in words is "one billion, two hundred seventy-three million, two hundred seventy-six thousand, four hundred eighty-nine".