1479015991 has 4 divisors (see below), whose sum is σ = 1483206192. Its totient is φ = 1474825792.

The previous prime is 1479015977. The next prime is 1479016051. The reversal of 1479015991 is 1995109741.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1479015991 - 2¹⁵ = 1478983223 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 (1479015931) 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 3 ways as a sum of consecutive naturals, for example, 2094571 + ... + 2095276.

It is an arithmetic number, because the mean of its divisors is an integer number (370801548).

Almost surely, 2^1479015991 is an apocalyptic number.

1479015991 is a deficient number, since it is larger than the sum of its proper divisors (4190201).

1479015991 is an equidigital number, since it uses as much as digits as its factorization.

1479015991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4190200.

The product of its (nonzero) digits is 102060, while the sum is 46.

The square root of 1479015991 is about 38457.9769488724. The cubic root of 1479015991 is about 1139.3512239046.

The spelling of 1479015991 in words is "one billion, four hundred seventy-nine million, fifteen thousand, nine hundred ninety-one".