401497877 has 4 divisors (see below), whose sum is σ = 437997696. Its totient is φ = 364998060.

The previous prime is 401497793. The next prime is 401497879. The reversal of 401497877 is 778794104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401497877 - 2¹⁰ = 401496853 is a prime.

It is a super-2 number, since 2×401497877² = 322401090471014258, 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 (401497879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18249893 + ... + 18249914.

It is an arithmetic number, because the mean of its divisors is an integer number (109499424).

Almost surely, 2^401497877 is an apocalyptic number.

It is an amenable number.

401497877 is a deficient number, since it is larger than the sum of its proper divisors (36499819).

401497877 is a wasteful number, since it uses less digits than its factorization.

401497877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36499818.

The product of its (nonzero) digits is 395136, while the sum is 47.

The square root of 401497877 is about 20037.4119336805. The cubic root of 401497877 is about 737.7248584486.

The spelling of 401497877 in words is "four hundred one million, four hundred ninety-seven thousand, eight hundred seventy-seven".