920407449 has 24 divisors (see below), whose sum is σ = 1358374080. Its totient is φ = 551064384.

The previous prime is 920407447. The next prime is 920407451. The reversal of 920407449 is 944704029.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (920407447) and next prime (920407451).

It is not a de Polignac number, because 920407449 - 2¹ = 920407447 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (920407447) 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 23 ways as a sum of consecutive naturals, for example, 44772 + ... + 62010.

It is an arithmetic number, because the mean of its divisors is an integer number (56598920).

Almost surely, 2^920407449 is an apocalyptic number.

It is an amenable number.

920407449 is a deficient number, since it is larger than the sum of its proper divisors (437966631).

920407449 is a wasteful number, since it uses less digits than its factorization.

920407449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17329 (or 17292 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 920407449 is about 30338.2176305728. The cubic root of 920407449 is about 972.7323848629.

The spelling of 920407449 in words is "nine hundred twenty million, four hundred seven thousand, four hundred forty-nine".