1149897 has 16 divisors (see below), whose sum is σ = 1855872. Its totient is φ = 618240.

The previous prime is 1149887. The next prime is 1149901. The reversal of 1149897 is 7989411.

It is a happy number.

It is not a de Polignac number, because 1149897 - 2⁴ = 1149881 is a prime.

It is a super-2 number, since 2×1149897² = 2644526221218, which contains 22 as substring.

1149897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1149817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1254 + ... + 1967.

It is an arithmetic number, because the mean of its divisors is an integer number (115992).

2^1149897 is an apocalyptic number.

1149897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1149897 is a deficient number, since it is larger than the sum of its proper divisors (705975).

1149897 is a wasteful number, since it uses less digits than its factorization.

1149897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248.

The product of its digits is 18144, while the sum is 39.

The square root of 1149897 is about 1072.3325044034. The cubic root of 1149897 is about 104.7658273390.

It can be divided in two parts, 114 and 9897, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 1149897 in words is "one million, one hundred forty-nine thousand, eight hundred ninety-seven".