919958401 has 4 divisors (see below), whose sum is σ = 939532032. Its totient is φ = 900384772.

The previous prime is 919958381. The next prime is 919958437. The reversal of 919958401 is 104859919.

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 cyclic number.

It is not a de Polignac number, because 919958401 - 2¹¹ = 919956353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (919952401) 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, 9786745 + ... + 9786838.

It is an arithmetic number, because the mean of its divisors is an integer number (234883008).

Almost surely, 2^919958401 is an apocalyptic number.

It is an amenable number.

919958401 is a deficient number, since it is larger than the sum of its proper divisors (19573631).

919958401 is a wasteful number, since it uses less digits than its factorization.

919958401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19573630.

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 919958401 is about 30330.8160292466. The cubic root of 919958401 is about 972.5741670405.

It can be divided in two parts, 9199 and 58401, that added together give a square (67600 = 260²).

The spelling of 919958401 in words is "nine hundred nineteen million, nine hundred fifty-eight thousand, four hundred one".