400974889 has 8 divisors (see below), whose sum is σ = 467609600. Its totient is φ = 343692468.

The previous prime is 400974823. The next prime is 400974901. The reversal of 400974889 is 988479004.

It is not a de Polignac number, because 400974889 - 2⁹ = 400974377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400974589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584169 + ... + 584854.

It is an arithmetic number, because the mean of its divisors is an integer number (58451200).

Almost surely, 2^400974889 is an apocalyptic number.

400974889 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

400974889 is a deficient number, since it is larger than the sum of its proper divisors (66634711).

400974889 is an equidigital number, since it uses as much as digits as its factorization.

400974889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169044 (or 1169030 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 400974889 is about 20024.3573929352. The cubic root of 400974889 is about 737.4044010529.

The spelling of 400974889 in words is "four hundred million, nine hundred seventy-four thousand, eight hundred eighty-nine".