9949145428 has 12 divisors (see below), whose sum is σ = 17493522592. Its totient is φ = 4950996120.

The previous prime is 9949145419. The next prime is 9949145431. The reversal of 9949145428 is 8245419499.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5893200 + ... + 5894887.

Almost surely, 2^9949145428 is an apocalyptic number.

It is an amenable number.

9949145428 is a deficient number, since it is larger than the sum of its proper divisors (7544377164).

9949145428 is a wasteful number, since it uses less digits than its factorization.

9949145428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11788302 (or 11788300 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 55.

The square root of 9949145428 is about 99745.4030419447. The cubic root of 9949145428 is about 2150.7763864883.

The spelling of 9949145428 in words is "nine billion, nine hundred forty-nine million, one hundred forty-five thousand, four hundred twenty-eight".