74777444 has 48 divisors (see below), whose sum is σ = 155514240. Its totient is φ = 30792960.

The previous prime is 74777419. The next prime is 74777453. The reversal of 74777444 is 44477747.

It is a super-2 number, since 2×74777444² = 11183332262346272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 74777395 and 74777404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91799 + ... + 92609.

It is an arithmetic number, because the mean of its divisors is an integer number (3239880).

Almost surely, 2^74777444 is an apocalyptic number.

74777444 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74777444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77757120).

74777444 is an abundant number, since it is smaller than the sum of its proper divisors (80736796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74777444 is a wasteful number, since it uses less digits than its factorization.

74777444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948 (or 946 counting only the distinct ones).

The product of its digits is 614656, while the sum is 44.

The square root of 74777444 is about 8647.3952147453. The cubic root of 74777444 is about 421.2987838087.

The spelling of 74777444 in words is "seventy-four million, seven hundred seventy-seven thousand, four hundred forty-four".