1979507 has 2 divisors, whose sum is σ = 1979508. Its totient is φ = 1979506.

The previous prime is 1979491. The next prime is 1979539. The reversal of 1979507 is 7059791.

It is a weak prime.

It is an emirp because it is prime and its reverse (7059791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1979507 - 2⁴ = 1979491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1979207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989753 + 989754.

It is an arithmetic number, because the mean of its divisors is an integer number (989754).

2^1979507 is an apocalyptic number.

1979507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979507 is an equidigital number, since it uses as much as digits as its factorization.

1979507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 1979507 is about 1406.9495371192. The cubic root of 1979507 is about 125.5603007520.

The spelling of 1979507 in words is "one million, nine hundred seventy-nine thousand, five hundred seven".