920417213 has 8 divisors (see below), whose sum is σ = 976063608. Its totient is φ = 864937984.

The previous prime is 920417191. The next prime is 920417261. The reversal of 920417213 is 312714029.

It can be written as a sum of positive squares in 4 ways, for example, as 57350329 + 863066884 = 7573^2 + 29378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 920417213 - 2⁶ = 920417149 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 (920414213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30356 + ... + 52557.

It is an arithmetic number, because the mean of its divisors is an integer number (122007951).

Almost surely, 2^920417213 is an apocalyptic number.

It is an amenable number.

920417213 is a deficient number, since it is larger than the sum of its proper divisors (55646395).

920417213 is a wasteful number, since it uses less digits than its factorization.

920417213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83583.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 920417213 is about 30338.3785492897. The cubic root of 920417213 is about 972.7358245444.

The spelling of 920417213 in words is "nine hundred twenty million, four hundred seventeen thousand, two hundred thirteen".