73909855 has 8 divisors (see below), whose sum is σ = 88740432. Its totient is φ = 59095488.

The previous prime is 73909853. The next prime is 73909861. The reversal of 73909855 is 55890937.

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 73909855 - 2¹ = 73909853 is a prime.

It is a super-2 number, since 2×73909855² = 10925333332242050, 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 (73909853) 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, 11224 + ... + 16546.

It is an arithmetic number, because the mean of its divisors is an integer number (11092554).

Almost surely, 2^73909855 is an apocalyptic number.

73909855 is a deficient number, since it is larger than the sum of its proper divisors (14830577).

73909855 is a wasteful number, since it uses less digits than its factorization.

73909855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8105.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 73909855 is about 8597.0840986930. The cubic root of 73909855 is about 419.6630990654.

The spelling of 73909855 in words is "seventy-three million, nine hundred nine thousand, eight hundred fifty-five".