1146879997 has 4 divisors (see below), whose sum is σ = 1151020636. Its totient is φ = 1142739360.

The previous prime is 1146879991. The next prime is 1146880001. The reversal of 1146879997 is 7999786411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7999786411 = 419 ⋅19092569.

It can be written as a sum of positive squares in 2 ways, for example, as 552203001 + 594676996 = 23499^2 + 24386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146879997 - 2³ = 1146879989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146879991) 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, 2069904 + ... + 2070457.

It is an arithmetic number, because the mean of its divisors is an integer number (287755159).

Almost surely, 2^1146879997 is an apocalyptic number.

It is an amenable number.

1146879997 is a deficient number, since it is larger than the sum of its proper divisors (4140639).

1146879997 is an equidigital number, since it uses as much as digits as its factorization.

1146879997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140638.

The product of its digits is 6858432, while the sum is 61.

The square root of 1146879997 is about 33865.6167373340. The cubic root of 1146879997 is about 1046.7412183477.

The spelling of 1146879997 in words is "one billion, one hundred forty-six million, eight hundred seventy-nine thousand, nine hundred ninety-seven".