401349477 has 4 divisors (see below), whose sum is σ = 535132640. Its totient is φ = 267566316.

The previous prime is 401349463. The next prime is 401349493. The reversal of 401349477 is 774943104.

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 not a de Polignac number, because 401349477 - 2⁴ = 401349461 is a prime.

It is a super-2 number, since 2×401349477² = 322162805376347058, 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 (401349427) 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 3 ways as a sum of consecutive naturals, for example, 66891577 + ... + 66891582.

It is an arithmetic number, because the mean of its divisors is an integer number (133783160).

Almost surely, 2^401349477 is an apocalyptic number.

It is an amenable number.

401349477 is a deficient number, since it is larger than the sum of its proper divisors (133783163).

401349477 is a wasteful number, since it uses less digits than its factorization.

401349477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133783162.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 401349477 is about 20033.7085183947. The cubic root of 401349477 is about 737.6339556350.

The spelling of 401349477 in words is "four hundred one million, three hundred forty-nine thousand, four hundred seventy-seven".