900913421 has 8 divisors (see below), whose sum is σ = 917273760. Its totient is φ = 884589552.

The previous prime is 900913411. The next prime is 900913463. The reversal of 900913421 is 124319009.

It is a happy number.

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 900913421 - 2¹⁴ = 900897037 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 (900913411) 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, 43451 + ... + 60743.

It is an arithmetic number, because the mean of its divisors is an integer number (114659220).

Almost surely, 2^900913421 is an apocalyptic number.

It is an amenable number.

900913421 is a deficient number, since it is larger than the sum of its proper divisors (16360339).

900913421 is a wasteful number, since it uses less digits than its factorization.

900913421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18235.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 900913421 is about 30015.2198226167. The cubic root of 900913421 is about 965.8159031603.

The spelling of 900913421 in words is "nine hundred million, nine hundred thirteen thousand, four hundred twenty-one".