7970042749 has 4 divisors (see below), whose sum is σ = 7994121760. Its totient is φ = 7945963740.

The previous prime is 7970042747. The next prime is 7970042783. The reversal of 7970042749 is 9472400797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9472400797 = 6977 ⋅1357661.

It is a cyclic number.

It is not a de Polignac number, because 7970042749 - 2¹ = 7970042747 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 (7970042747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12039009 + ... + 12039670.

It is an arithmetic number, because the mean of its divisors is an integer number (1998530440).

Almost surely, 2^7970042749 is an apocalyptic number.

It is an amenable number.

7970042749 is a deficient number, since it is larger than the sum of its proper divisors (24079011).

7970042749 is a wasteful number, since it uses less digits than its factorization.

7970042749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24079010.

The product of its (nonzero) digits is 889056, while the sum is 49.

The square root of 7970042749 is about 89275.0959058572. The cubic root of 7970042749 is about 1997.5004398175.

The spelling of 7970042749 in words is "seven billion, nine hundred seventy million, forty-two thousand, seven hundred forty-nine".