7442978349 has 8 divisors (see below), whose sum is σ = 10192186720. Its totient is φ = 4827877776.

The previous prime is 7442978341. The next prime is 7442978353. The reversal of 7442978349 is 9438792447.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7442978349 - 2³ = 7442978341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7442978341) 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 7 ways as a sum of consecutive naturals, for example, 33526819 + ... + 33527040.

It is an arithmetic number, because the mean of its divisors is an integer number (1274023340).

Almost surely, 2^7442978349 is an apocalyptic number.

It is an amenable number.

7442978349 is a deficient number, since it is larger than the sum of its proper divisors (2749208371).

7442978349 is a wasteful number, since it uses less digits than its factorization.

7442978349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67053899.

The product of its digits is 12192768, while the sum is 57.

The square root of 7442978349 is about 86272.6975873596. The cubic root of 7442978349 is about 1952.4604793728.

The spelling of 7442978349 in words is "seven billion, four hundred forty-two million, nine hundred seventy-eight thousand, three hundred forty-nine".