401019951 has 8 divisors (see below), whose sum is σ = 538775424. Its totient is φ = 265305560.

The previous prime is 401019907. The next prime is 401019977. The reversal of 401019951 is 159910104.

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 401019951 - 2⁶ = 401019887 is a prime.

It is a super-2 number, since 2×401019951² = 321634002200084802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401019901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509811 + ... + 510596.

It is an arithmetic number, because the mean of its divisors is an integer number (67346928).

Almost surely, 2^401019951 is an apocalyptic number.

401019951 is a deficient number, since it is larger than the sum of its proper divisors (137755473).

401019951 is a wasteful number, since it uses less digits than its factorization.

401019951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020541.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 401019951 is about 20025.4825410026. The cubic root of 401019951 is about 737.4320234579.

The spelling of 401019951 in words is "four hundred one million, nineteen thousand, nine hundred fifty-one".