99490439951 has 8 divisors (see below), whose sum is σ = 113719317504. Its totient is φ = 85265551800.

The previous prime is 99490439869. The next prime is 99490439953. The reversal of 99490439951 is 15993409499.

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 99490439951 - 2¹⁴ = 99490423567 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 (99490439953) 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, 943715 + ... + 1043828.

It is an arithmetic number, because the mean of its divisors is an integer number (14214914688).

Almost surely, 2^99490439951 is an apocalyptic number.

99490439951 is a deficient number, since it is larger than the sum of its proper divisors (14228877553).

99490439951 is a wasteful number, since it uses less digits than its factorization.

99490439951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994701.

The product of its (nonzero) digits is 14171760, while the sum is 62.

The spelling of 99490439951 in words is "ninety-nine billion, four hundred ninety million, four hundred thirty-nine thousand, nine hundred fifty-one".