401377447 has 4 divisors (see below), whose sum is σ = 402568816. Its totient is φ = 400186080.

The previous prime is 401377441. The next prime is 401377481. The reversal of 401377447 is 744773104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401377447 is a prime.

It is a super-2 number, since 2×401377447² = 322207709920475618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401377441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595179 + ... + 595852.

It is an arithmetic number, because the mean of its divisors is an integer number (100642204).

Almost surely, 2^401377447 is an apocalyptic number.

401377447 is a deficient number, since it is larger than the sum of its proper divisors (1191369).

401377447 is a wasteful number, since it uses less digits than its factorization.

401377447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191368.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 401377447 is about 20034.4065796819. The cubic root of 401377447 is about 737.6510904461.

The spelling of 401377447 in words is "four hundred one million, three hundred seventy-seven thousand, four hundred forty-seven".