92121749 has 4 divisors (see below), whose sum is σ = 94611564. Its totient is φ = 89631936.

The previous prime is 92121643. The next prime is 92121751. The reversal of 92121749 is 94712129.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84180625 + 7941124 = 9175^2 + 2818^2 .

It is a cyclic number.

It is not a de Polignac number, because 92121749 - 2⁸ = 92121493 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 (92121149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244852 + ... + 1244925.

It is an arithmetic number, because the mean of its divisors is an integer number (23652891).

Almost surely, 2^92121749 is an apocalyptic number.

It is an amenable number.

92121749 is a deficient number, since it is larger than the sum of its proper divisors (2489815).

92121749 is a wasteful number, since it uses less digits than its factorization.

92121749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489814.

The product of its digits is 9072, while the sum is 35.

The square root of 92121749 is about 9598.0075536540. The cubic root of 92121749 is about 451.6347929076.

The spelling of 92121749 in words is "ninety-two million, one hundred twenty-one thousand, seven hundred forty-nine".