491429016 has 72 divisors (see below), whose sum is σ = 1441245780. Its totient is φ = 151205184.

The previous prime is 491428999. The next prime is 491429027. The reversal of 491429016 is 610924194.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8026 + ... + 32361.

Almost surely, 2^491429016 is an apocalyptic number.

It is an amenable number.

491429016 is an abundant number, since it is smaller than the sum of its proper divisors (949816764).

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

491429016 is a wasteful number, since it uses less digits than its factorization.

491429016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40425 (or 40405 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 491429016 is about 22168.1983029745. The cubic root of 491429016 is about 789.1391659372.

It can be divided in two parts, 4914 and 29016, that added together give a triangular number (33930 = T₂₆₀).

The spelling of 491429016 in words is "four hundred ninety-one million, four hundred twenty-nine thousand, sixteen".