74134749 has 8 divisors (see below), whose sum is σ = 106449952. Its totient is φ = 45621360.

The previous prime is 74134747. The next prime is 74134769. The reversal of 74134749 is 94743147.

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

It is not a de Polignac number, because 74134749 - 2¹ = 74134747 is a prime.

It is a super-2 number, since 2×74134749² = 10991922018586002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1900891 = 74134749 / (7 + 4 + 1 + 3 + 4 + 7 + 4 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74134747) 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, 950407 + ... + 950484.

It is an arithmetic number, because the mean of its divisors is an integer number (13306244).

Almost surely, 2^74134749 is an apocalyptic number.

It is an amenable number.

74134749 is a deficient number, since it is larger than the sum of its proper divisors (32315203).

74134749 is a wasteful number, since it uses less digits than its factorization.

74134749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900907.

The product of its digits is 84672, while the sum is 39.

The square root of 74134749 is about 8610.1538313784. The cubic root of 74134749 is about 420.0883204284.

The spelling of 74134749 in words is "seventy-four million, one hundred thirty-four thousand, seven hundred forty-nine".