401904947494 has 8 divisors (see below), whose sum is σ = 603425621808. Its totient is φ = 200763073560.

The previous prime is 401904947491. The next prime is 401904947539. The reversal of 401904947494 is 494749409104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401904947491) 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, 94697442 + ... + 94701685.

It is an arithmetic number, because the mean of its divisors is an integer number (75428202726).

Almost surely, 2^401904947494 is an apocalyptic number.

401904947494 is a deficient number, since it is larger than the sum of its proper divisors (201520674314).

401904947494 is a wasteful number, since it uses less digits than its factorization.

401904947494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189400190.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 401904947494 in words is "four hundred one billion, nine hundred four million, nine hundred forty-seven thousand, four hundred ninety-four".