1272269487 has 8 divisors (see below), whose sum is σ = 1696799104. Its totient is φ = 847959768.

The previous prime is 1272269459. The next prime is 1272269491. The reversal of 1272269487 is 7849622721.

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

It is not a de Polignac number, because 1272269487 - 2¹⁸ = 1272007343 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 (1272262487) 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, 40963 + ... + 64980.

It is an arithmetic number, because the mean of its divisors is an integer number (212099888).

Almost surely, 2^1272269487 is an apocalyptic number.

1272269487 is a deficient number, since it is larger than the sum of its proper divisors (424529617).

1272269487 is a wasteful number, since it uses less digits than its factorization.

1272269487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109949.

The product of its digits is 677376, while the sum is 48.

The square root of 1272269487 is about 35668.8868203088. The cubic root of 1272269487 is about 1083.5768146905.

The spelling of 1272269487 in words is "one billion, two hundred seventy-two million, two hundred sixty-nine thousand, four hundred eighty-seven".