1291464 has 40 divisors (see below), whose sum is σ = 3619110. Its totient is φ = 430272.

The previous prime is 1291453. The next prime is 1291471. The reversal of 1291464 is 4641921.

It can be written as a sum of positive squares in only one way, i.e., 980100 + 311364 = 990^2 + 558^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 349 + ... + 1644.

2^1291464 is an apocalyptic number.

It is an amenable number.

1291464 is an abundant number, since it is smaller than the sum of its proper divisors (2327646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1291464 is a wasteful number, since it uses less digits than its factorization.

1291464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011 (or 1998 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1291464 is about 1136.4259764719. The cubic root of 1291464 is about 108.8998884410.

The spelling of 1291464 in words is "one million, two hundred ninety-one thousand, four hundred sixty-four".