1200664479 has 8 divisors (see below), whose sum is σ = 1829584000. Its totient is φ = 686093976.

The previous prime is 1200664433. The next prime is 1200664481. The reversal of 1200664479 is 9744660021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200664479 - 2²¹ = 1198567327 is a prime.

It is a super-2 number, since 2×1200664479² = 2883190382264682882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200664429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28587229 + ... + 28587270.

It is an arithmetic number, because the mean of its divisors is an integer number (228698000).

Almost surely, 2^1200664479 is an apocalyptic number.

1200664479 is a deficient number, since it is larger than the sum of its proper divisors (628919521).

1200664479 is an equidigital number, since it uses as much as digits as its factorization.

1200664479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57174509.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 1200664479 is about 34650.6057522809. The cubic root of 1200664479 is about 1062.8546758522.

The spelling of 1200664479 in words is "one billion, two hundred million, six hundred sixty-four thousand, four hundred seventy-nine".