7399702081 has 4 divisors (see below), whose sum is σ = 7834978692. Its totient is φ = 6964425472.

The previous prime is 7399702073. The next prime is 7399702087. The reversal of 7399702081 is 1802079937.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6875063056 + 524639025 = 82916^2 + 22905^2 .

It is a cyclic number.

It is not a de Polignac number, because 7399702081 - 2³ = 7399702073 is a prime.

It is a super-2 number, since 2×7399702081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7399702087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217638280 + ... + 217638313.

It is an arithmetic number, because the mean of its divisors is an integer number (1958744673).

Almost surely, 2^7399702081 is an apocalyptic number.

It is an amenable number.

7399702081 is a deficient number, since it is larger than the sum of its proper divisors (435276611).

7399702081 is a wasteful number, since it uses less digits than its factorization.

7399702081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435276610.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 7399702081 is about 86021.5210339831. The cubic root of 7399702081 is about 1948.6690089736.

The spelling of 7399702081 in words is "seven billion, three hundred ninety-nine million, seven hundred two thousand, eighty-one".