400250001 has 8 divisors (see below), whose sum is σ = 535744224. Its totient is φ = 265794560.

The previous prime is 400249981. The next prime is 400250009. The reversal of 400250001 is 100052004.

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 400250001 - 2²¹ = 398152849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400250009) 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, 258795 + ... + 260336.

It is an arithmetic number, because the mean of its divisors is an integer number (66968028).

Almost surely, 2^400250001 is an apocalyptic number.

It is an amenable number.

400250001 is a deficient number, since it is larger than the sum of its proper divisors (135494223).

400250001 is a wasteful number, since it uses less digits than its factorization.

400250001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519391.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 400250001 is about 20006.2490487347. The cubic root of 400250001 is about 736.9597696859.

The spelling of 400250001 in words is "four hundred million, two hundred fifty thousand, one".