1115406397 has 16 divisors (see below), whose sum is σ = 1378460160. Its totient is φ = 880674048.

The previous prime is 1115406361. The next prime is 1115406421. The reversal of 1115406397 is 7936045111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1115406397 - 2²³ = 1107017789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115406697) 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, 94122 + ... + 105307.

It is an arithmetic number, because the mean of its divisors is an integer number (86153760).

Almost surely, 2^1115406397 is an apocalyptic number.

1115406397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1115406397 is a deficient number, since it is larger than the sum of its proper divisors (263053763).

1115406397 is a wasteful number, since it uses less digits than its factorization.

1115406397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199500.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1115406397 is about 33397.7004747333. The cubic root of 1115406397 is about 1037.0770977242.

The spelling of 1115406397 in words is "one billion, one hundred fifteen million, four hundred six thousand, three hundred ninety-seven".