921376049 has 4 divisors (see below), whose sum is σ = 1005137520. Its totient is φ = 837614580.

The previous prime is 921376039. The next prime is 921376061. The reversal of 921376049 is 940673129.

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.

It is a de Polignac number, because none of the positive numbers 2^k-921376049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 921375997 and 921376015.

It is not an unprimeable number, because it can be changed into a prime (921376039) 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, 41880719 + ... + 41880740.

It is an arithmetic number, because the mean of its divisors is an integer number (251284380).

Almost surely, 2^921376049 is an apocalyptic number.

It is an amenable number.

921376049 is a deficient number, since it is larger than the sum of its proper divisors (83761471).

921376049 is a wasteful number, since it uses less digits than its factorization.

921376049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83761470.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 921376049 is about 30354.1767966124. The cubic root of 921376049 is about 973.0734867937.

The spelling of 921376049 in words is "nine hundred twenty-one million, three hundred seventy-six thousand, forty-nine".