1206979579 has 48 divisors (see below), whose sum is σ = 1465171200. Its totient is φ = 988910208.

The previous prime is 1206979573. The next prime is 1206979601. The reversal of 1206979579 is 9759796021.

It is not a de Polignac number, because 1206979579 - 2²³ = 1198590971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206979573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4357189 + ... + 4357465.

It is an arithmetic number, because the mean of its divisors is an integer number (30524400).

Almost surely, 2^1206979579 is an apocalyptic number.

1206979579 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1206979579 is a deficient number, since it is larger than the sum of its proper divisors (258191621).

1206979579 is a wasteful number, since it uses less digits than its factorization.

1206979579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 55.

The square root of 1206979579 is about 34741.6116350408. The cubic root of 1206979579 is about 1064.7148403002.

The spelling of 1206979579 in words is "one billion, two hundred six million, nine hundred seventy-nine thousand, five hundred seventy-nine".