74146989 has 8 divisors (see below), whose sum is σ = 112985920. Its totient is φ = 42369696.

The previous prime is 74146967. The next prime is 74146993. The reversal of 74146989 is 98964147.

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

It is not a de Polignac number, because 74146989 - 2¹³ = 74138797 is a prime.

It is a super-2 number, since 2×74146989² = 10995551955532242, 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 (74146489) 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, 1765384 + ... + 1765425.

It is an arithmetic number, because the mean of its divisors is an integer number (14123240).

Almost surely, 2^74146989 is an apocalyptic number.

It is an amenable number.

74146989 is a deficient number, since it is larger than the sum of its proper divisors (38838931).

74146989 is a wasteful number, since it uses less digits than its factorization.

74146989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530819.

The product of its digits is 435456, while the sum is 48.

The square root of 74146989 is about 8610.8645907365. The cubic root of 74146989 is about 420.1114386833. Note that the first 3 decimals are identical.

The spelling of 74146989 in words is "seventy-four million, one hundred forty-six thousand, nine hundred eighty-nine".