401976 has 32 divisors (see below), whose sum is σ = 1117200. Its totient is φ = 133920.

The previous prime is 401959. The next prime is 401981. The reversal of 401976 is 679104.

401976 = T₃₁₃ + T₃₁₄ + ... + T₃₂₀.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715 + ... + 1146.

2⁴⁰¹⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

401976 is an abundant number, since it is smaller than the sum of its proper divisors (715224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401976 is a wasteful number, since it uses less digits than its factorization.

401976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876 (or 1866 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 401976 is about 634.0157726745. The cubic root of 401976 is about 73.8017581708.

It can be divided in two parts, 4019 and 76, that added together give a triangular number (4095 = T₉₀).

The spelling of 401976 in words is "four hundred one thousand, nine hundred seventy-six".