1479991 has 2 divisors, whose sum is σ = 1479992. Its totient is φ = 1479990.

The previous prime is 1479941. The next prime is 1479997. The reversal of 1479991 is 1999741.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1479991 - 2⁹ = 1479479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1479997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739995 + 739996.

It is an arithmetic number, because the mean of its divisors is an integer number (739996).

2^1479991 is an apocalyptic number.

1479991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1479991 is an equidigital number, since it uses as much as digits as its factorization.

1479991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 40.

The square root of 1479991 is about 1216.5488070768. The cubic root of 1479991 is about 113.9601533049.

The spelling of 1479991 in words is "one million, four hundred seventy-nine thousand, nine hundred ninety-one".