9920507437 has 8 divisors (see below), whose sum is σ = 10514253816. Its totient is φ = 9327892992.

The previous prime is 9920507419. The next prime is 9920507459. The reversal of 9920507437 is 7347050299.

It can be written as a sum of positive squares in 4 ways, for example, as 3013900201 + 6906607236 = 54899^2 + 83106^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9920507437 - 2⁷ = 9920507309 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 (9920507237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264898 + ... + 300019.

It is an arithmetic number, because the mean of its divisors is an integer number (1314281727).

Almost surely, 2^9920507437 is an apocalyptic number.

It is an amenable number.

9920507437 is a deficient number, since it is larger than the sum of its proper divisors (593746379).

9920507437 is a wasteful number, since it uses less digits than its factorization.

9920507437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565967.

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 9920507437 is about 99601.7441463753. The cubic root of 9920507437 is about 2148.7107783412.

The spelling of 9920507437 in words is "nine billion, nine hundred twenty million, five hundred seven thousand, four hundred thirty-seven".