99939477 has 8 divisors (see below), whose sum is σ = 145366560. Its totient is φ = 60569360.

The previous prime is 99939473. The next prime is 99939491. The reversal of 99939477 is 77493999.

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 99939477 - 2² = 99939473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99939473) 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, 1514202 + ... + 1514267.

It is an arithmetic number, because the mean of its divisors is an integer number (18170820).

Almost surely, 2^99939477 is an apocalyptic number.

It is an amenable number.

99939477 is a deficient number, since it is larger than the sum of its proper divisors (45427083).

99939477 is a wasteful number, since it uses less digits than its factorization.

99939477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028483.

The product of its digits is 3857868, while the sum is 57.

The square root of 99939477 is about 9996.9733919822. The cubic root of 99939477 is about 464.0652235032.

The spelling of 99939477 in words is "ninety-nine million, nine hundred thirty-nine thousand, four hundred seventy-seven".