803955440 has 20 divisors (see below), whose sum is σ = 1869196584. Its totient is φ = 321582144.

The previous prime is 803955437. The next prime is 803955443. The reversal of 803955440 is 44559308.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (803955437) and next prime (803955443).

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 803955394 and 803955403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (803955443) 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, 5024642 + ... + 5024801.

Almost surely, 2^803955440 is an apocalyptic number.

803955440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

803955440 is an abundant number, since it is smaller than the sum of its proper divisors (1065241144).

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

803955440 is a wasteful number, since it uses less digits than its factorization.

803955440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10049456 (or 10049450 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 803955440 is about 28354.1079916121. The cubic root of 803955440 is about 929.8452126094.

The spelling of 803955440 in words is "eight hundred three million, nine hundred fifty-five thousand, four hundred forty".