905400940 has 24 divisors (see below), whose sum is σ = 1902079872. Its totient is φ = 362019840.

The previous prime is 905400919. The next prime is 905401019. The reversal of 905400940 is 49004509.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55525 + ... + 69955.

It is an arithmetic number, because the mean of its divisors is an integer number (79253328).

Almost surely, 2^905400940 is an apocalyptic number.

It is an amenable number.

905400940 is an abundant number, since it is smaller than the sum of its proper divisors (996678932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

905400940 is a wasteful number, since it uses less digits than its factorization.

905400940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17577 (or 17575 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 905400940 is about 30089.8810233607. The cubic root of 905400940 is about 967.4168490346.

The spelling of 905400940 in words is "nine hundred five million, four hundred thousand, nine hundred forty".