400919768 has 8 divisors (see below), whose sum is σ = 751724580. Its totient is φ = 200459880.

The previous prime is 400919749. The next prime is 400919791. The reversal of 400919768 is 867919004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25057478 + ... + 25057493.

Almost surely, 2^400919768 is an apocalyptic number.

It is an amenable number.

400919768 is a deficient number, since it is larger than the sum of its proper divisors (350804812).

400919768 is a wasteful number, since it uses less digits than its factorization.

400919768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50114977 (or 50114973 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 400919768 is about 20022.9809968446. The cubic root of 400919768 is about 737.3706098008.

The spelling of 400919768 in words is "four hundred million, nine hundred nineteen thousand, seven hundred sixty-eight".