74149047 has 32 divisors (see below), whose sum is σ = 126003200. Its totient is φ = 42215904.

The previous prime is 74149037. The next prime is 74149091. The reversal of 74149047 is 74094147.

It is not a de Polignac number, because 74149047 - 2⁶ = 74148983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74149007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68829 + ... + 69897.

It is an arithmetic number, because the mean of its divisors is an integer number (3937600).

Almost surely, 2^74149047 is an apocalyptic number.

74149047 is a deficient number, since it is larger than the sum of its proper divisors (51854153).

74149047 is a wasteful number, since it uses less digits than its factorization.

74149047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 74149047 is about 8610.9840901026. The cubic root of 74149047 is about 420.1153254734.

It can be divided in two parts, 7414 and 9047, that added together give a palindrome (16461).

The spelling of 74149047 in words is "seventy-four million, one hundred forty-nine thousand, forty-seven".