92749021 has 4 divisors (see below), whose sum is σ = 92768544. Its totient is φ = 92729500.

The previous prime is 92749009. The next prime is 92749031. The reversal of 92749021 is 12094729.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12094729 = 113 ⋅107033.

It is a cyclic number.

It is not a de Polignac number, because 92749021 - 2¹⁷ = 92617949 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 (92749031) 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, 2496 + ... + 13846.

It is an arithmetic number, because the mean of its divisors is an integer number (23192136).

Almost surely, 2^92749021 is an apocalyptic number.

It is an amenable number.

92749021 is a deficient number, since it is larger than the sum of its proper divisors (19523).

92749021 is a wasteful number, since it uses less digits than its factorization.

92749021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19522.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 92749021 is about 9630.6293148475. The cubic root of 92749021 is about 452.6575599784.

The spelling of 92749021 in words is "ninety-two million, seven hundred forty-nine thousand, twenty-one".