401402011 has 8 divisors (see below), whose sum is σ = 436501440. Its totient is φ = 367579008.

The previous prime is 401401997. The next prime is 401402059. The reversal of 401402011 is 110204104.

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 401402011 - 2⁷ = 401401883 is a prime.

It is a super-2 number, since 2×401402011² = 322247148869688242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401401982 and 401402000.

It is not an unprimeable number, because it can be changed into a prime (401402411) 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, 318451 + ... + 319708.

It is an arithmetic number, because the mean of its divisors is an integer number (54562680).

Almost surely, 2^401402011 is an apocalyptic number.

401402011 is a deficient number, since it is larger than the sum of its proper divisors (35099429).

401402011 is a wasteful number, since it uses less digits than its factorization.

401402011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638213.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 401402011 is about 20035.0196156630. The cubic root of 401402011 is about 737.6661380378. Note that the first 3 decimals are identical.

Adding to 401402011 its reverse (110204104), we get a palindrome (511606115).

The spelling of 401402011 in words is "four hundred one million, four hundred two thousand, eleven".