1199400697 has 4 divisors (see below), whose sum is σ = 1308437136. Its totient is φ = 1090364260.

The previous prime is 1199400689. The next prime is 1199400751. The reversal of 1199400697 is 7960049911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1199400697 - 2³ = 1199400689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1199400617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54518203 + ... + 54518224.

It is an arithmetic number, because the mean of its divisors is an integer number (327109284).

Almost surely, 2^1199400697 is an apocalyptic number.

It is an amenable number.

1199400697 is a deficient number, since it is larger than the sum of its proper divisors (109036439).

1199400697 is a wasteful number, since it uses less digits than its factorization.

1199400697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109036438.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 1199400697 is about 34632.3648773802. The cubic root of 1199400697 is about 1062.4816357057.

The spelling of 1199400697 in words is "one billion, one hundred ninety-nine million, four hundred thousand, six hundred ninety-seven".