992691049 has 15 divisors (see below), whose sum is σ = 1159874493. Its totient is φ = 849554748.

The previous prime is 992691023. The next prime is 992691071. The reversal of 992691049 is 940196299.

The square root of 992691049 is 31507.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 992691049 - 2⁷ = 992690921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 992690993 and 992691011.

It is not an unprimeable number, because it can be changed into a prime (992691949) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1543522 + ... + 1544164.

Almost surely, 2^992691049 is an apocalyptic number.

992691049 is the 31507-th square number.

992691049 is the 15754-th centered octagonal number.

It is an amenable number.

992691049 is a deficient number, since it is larger than the sum of its proper divisors (167183444).

992691049 is an frugal number, since it uses more digits than its factorization.

992691049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 49.

The cubic root of 992691049 is about 997.5577231396.

Multiplying 992691049 by its sum of digits (49), we get a square (48641861401 = 220549²).

992691049 divided by its sum of digits (49) gives a square (20259001 = 4501²).

The spelling of 992691049 in words is "nine hundred ninety-two million, six hundred ninety-one thousand, forty-nine".