78350999 has 8 divisors (see below), whose sum is σ = 79177728. Its totient is φ = 77527800.

The previous prime is 78350983. The next prime is 78351017. The reversal of 78350999 is 99905387.

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 78350999 - 2⁴ = 78350983 is a prime.

It is a super-2 number, since 2×78350999² = 12277758088596002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78350099) 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, 74024 + ... + 75074.

It is an arithmetic number, because the mean of its divisors is an integer number (9897216).

Almost surely, 2^78350999 is an apocalyptic number.

78350999 is a deficient number, since it is larger than the sum of its proper divisors (826729).

78350999 is a wasteful number, since it uses less digits than its factorization.

78350999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 78350999 is about 8851.6099665541. The cubic root of 78350999 is about 427.9058061996.

The spelling of 78350999 in words is "seventy-eight million, three hundred fifty thousand, nine hundred ninety-nine".