913656421 has 8 divisors (see below), whose sum is σ = 935807840. Its totient is φ = 891755568.

The previous prime is 913656407. The next prime is 913656431. The reversal of 913656421 is 124656319.

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 913656421 - 2⁹ = 913655909 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 (913656431) 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, 55251 + ... + 69856.

It is an arithmetic number, because the mean of its divisors is an integer number (116975980).

Almost surely, 2^913656421 is an apocalyptic number.

It is an amenable number.

913656421 is a deficient number, since it is larger than the sum of its proper divisors (22151419).

913656421 is a wasteful number, since it uses less digits than its factorization.

913656421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125283.

The product of its digits is 38880, while the sum is 37.

The square root of 913656421 is about 30226.7500899452. The cubic root of 913656421 is about 970.3482722193.

The spelling of 913656421 in words is "nine hundred thirteen million, six hundred fifty-six thousand, four hundred twenty-one".