7143649979 has 2 divisors, whose sum is σ = 7143649980. Its totient is φ = 7143649978.

The previous prime is 7143649943. The next prime is 7143649993. The reversal of 7143649979 is 9799463417.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7143649979 - 2²⁸ = 6875214523 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (7143649999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3571824989 + 3571824990.

It is an arithmetic number, because the mean of its divisors is an integer number (3571824990).

Almost surely, 2^7143649979 is an apocalyptic number.

7143649979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7143649979 is an equidigital number, since it uses as much as digits as its factorization.

7143649979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 59.

The square root of 7143649979 is about 84520.1158245775. The cubic root of 7143649979 is about 1925.9280377317.

The spelling of 7143649979 in words is "seven billion, one hundred forty-three million, six hundred forty-nine thousand, nine hundred seventy-nine".