400890263749 has 8 divisors (see below), whose sum is σ = 408955426880. Its totient is φ = 392905351296.

The previous prime is 400890263743. The next prime is 400890263819. The reversal of 400890263749 is 947362098004.

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 400890263749 - 2⁵ = 400890263717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400890263696 and 400890263705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400890263743) 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, 20052579 + ... + 20072560.

It is an arithmetic number, because the mean of its divisors is an integer number (51119428360).

Almost surely, 2^400890263749 is an apocalyptic number.

It is an amenable number.

400890263749 is a deficient number, since it is larger than the sum of its proper divisors (8065163131).

400890263749 is a wasteful number, since it uses less digits than its factorization.

400890263749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40125339.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 400890263749 in words is "four hundred billion, eight hundred ninety million, two hundred sixty-three thousand, seven hundred forty-nine".