99739669 has 2 divisors, whose sum is σ = 99739670. Its totient is φ = 99739668.

The previous prime is 99739657. The next prime is 99739691. The reversal of 99739669 is 96693799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97259044 + 2480625 = 9862^2 + 1575^2 .

It is a cyclic number.

It is not a de Polignac number, because 99739669 - 2¹³ = 99731477 is a prime.

It is a super-2 number, since 2×99739669² = 19896003144459122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99739609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49869834 + 49869835.

It is an arithmetic number, because the mean of its divisors is an integer number (49869835).

Almost surely, 2^99739669 is an apocalyptic number.

It is an amenable number.

99739669 is a deficient number, since it is larger than the sum of its proper divisors (1).

99739669 is an equidigital number, since it uses as much as digits as its factorization.

99739669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4960116, while the sum is 58.

The square root of 99739669 is about 9986.9749674263. The cubic root of 99739669 is about 463.7557501775.

The spelling of 99739669 in words is "ninety-nine million, seven hundred thirty-nine thousand, six hundred sixty-nine".