920401655 has 4 divisors (see below), whose sum is σ = 1104481992. Its totient is φ = 736321320.

The previous prime is 920401637. The next prime is 920401747. The reversal of 920401655 is 556104029.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 920401655 - 2⁸ = 920401399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92040161 + ... + 92040170.

It is an arithmetic number, because the mean of its divisors is an integer number (276120498).

Almost surely, 2^920401655 is an apocalyptic number.

920401655 is a deficient number, since it is larger than the sum of its proper divisors (184080337).

920401655 is a wasteful number, since it uses less digits than its factorization.

920401655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184080336.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 920401655 is about 30338.1221403039. The cubic root of 920401655 is about 972.7303437295.

The spelling of 920401655 in words is "nine hundred twenty million, four hundred one thousand, six hundred fifty-five".