7399607021 has 4 divisors (see below), whose sum is σ = 7423248252. Its totient is φ = 7375965792.

The previous prime is 7399606997. The next prime is 7399607041. The reversal of 7399607021 is 1207069937.

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 1083331396 + 6316275625 = 32914^2 + 79475^2 .

It is a cyclic number.

It is not a de Polignac number, because 7399607021 - 2¹⁴ = 7399590637 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 (7399607041) 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, 11820146 + ... + 11820771.

It is an arithmetic number, because the mean of its divisors is an integer number (1855812063).

Almost surely, 2^7399607021 is an apocalyptic number.

It is an amenable number.

7399607021 is a deficient number, since it is larger than the sum of its proper divisors (23641231).

7399607021 is a wasteful number, since it uses less digits than its factorization.

7399607021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23641230.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 7399607021 is about 86020.9684960591. The cubic root of 7399607021 is about 1948.6606644363.

The spelling of 7399607021 in words is "seven billion, three hundred ninety-nine million, six hundred seven thousand, twenty-one".