401748994 has 4 divisors (see below), whose sum is σ = 602623494. Its totient is φ = 200874496.

The previous prime is 401748973. The next prime is 401749009. The reversal of 401748994 is 499847104.

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

It can be written as a sum of positive squares in only one way, i.e., 321735969 + 80013025 = 17937^2 + 8945^2 .

It is a super-2 number, since 2×401748994² = 322804508360024072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100437247 + ... + 100437250.

Almost surely, 2^401748994 is an apocalyptic number.

401748994 is a deficient number, since it is larger than the sum of its proper divisors (200874500).

401748994 is a wasteful number, since it uses less digits than its factorization.

401748994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200874499.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 401748994 is about 20043.6771576475. The cubic root of 401748994 is about 737.8786298255.

The spelling of 401748994 in words is "four hundred one million, seven hundred forty-eight thousand, nine hundred ninety-four".