99755378 has 8 divisors (see below), whose sum is σ = 153282780. Its totient is φ = 48661120.

The previous prime is 99755323. The next prime is 99755387. The reversal of 99755378 is 87355799.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 81667369 + 18088009 = 9037^2 + 4253^2 .

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

It is a super-2 number, since 2×99755378² = 19902270879845768, which contains 22 as substring.

It is a Curzon 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, 608183 + ... + 608346.

Almost surely, 2^99755378 is an apocalyptic number.

99755378 is a deficient number, since it is larger than the sum of its proper divisors (53527402).

99755378 is a wasteful number, since it uses less digits than its factorization.

99755378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216572.

The product of its digits is 2381400, while the sum is 53.

The square root of 99755378 is about 9987.7614108468. The cubic root of 99755378 is about 463.7800960796.

The spelling of 99755378 in words is "ninety-nine million, seven hundred fifty-five thousand, three hundred seventy-eight".