74901949 has 16 divisors (see below), whose sum is σ = 82006128. Its totient is φ = 68124672.

The previous prime is 74901943. The next prime is 74901989. The reversal of 74901949 is 94910947.

It can be written as a sum of positive squares in 8 ways, for example, as 338724 + 74563225 = 582^2 + 8635^2 .

It is a cyclic number.

It is not a de Polignac number, because 74901949 - 2³ = 74901941 is a prime.

It is a super-2 number, since 2×74901949² = 11220603927997202, 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 (74901941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121089 + ... + 121705.

It is an arithmetic number, because the mean of its divisors is an integer number (5125383).

Almost surely, 2^74901949 is an apocalyptic number.

It is an amenable number.

74901949 is a deficient number, since it is larger than the sum of its proper divisors (7104179).

74901949 is a wasteful number, since it uses less digits than its factorization.

74901949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 74901949 is about 8654.5912092946. The cubic root of 74901949 is about 421.5324760255.

The spelling of 74901949 in words is "seventy-four million, nine hundred one thousand, nine hundred forty-nine".