1229491 has 8 divisors (see below), whose sum is σ = 1344384. Its totient is φ = 1119360.

The previous prime is 1229489. The next prime is 1229519. The reversal of 1229491 is 1949221.

1229491 = T₂₆₆ + T₂₆₇ + ... + T₂₉₆.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1229491 - 2¹ = 1229489 is a prime.

It is a Duffinian number.

1229491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1229401) 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, 640 + ... + 1693.

It is an arithmetic number, because the mean of its divisors is an integer number (168048).

2^1229491 is an apocalyptic number.

1229491 is a deficient number, since it is larger than the sum of its proper divisors (114893).

1229491 is a wasteful number, since it uses less digits than its factorization.

1229491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381.

The product of its digits is 1296, while the sum is 28.

The square root of 1229491 is about 1108.8241519736. The cubic root of 1229491 is about 107.1293454284.

The spelling of 1229491 in words is "one million, two hundred twenty-nine thousand, four hundred ninety-one".