46389840 has 160 divisors (see below), whose sum is σ = 167774976. Its totient is φ = 10383360.

The previous prime is 46389839. The next prime is 46389853. The reversal of 46389840 is 4898364.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 46389792 and 46389801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88780 + ... + 89300.

Almost surely, 2^46389840 is an apocalyptic number.

46389840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 46389840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83887488).

46389840 is an abundant number, since it is smaller than the sum of its proper divisors (121385136).

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

46389840 is a wasteful number, since it uses less digits than its factorization.

46389840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 46389840 is about 6811.0087358628. The cubic root of 46389840 is about 359.3141261984.

The spelling of 46389840 in words is "forty-six million, three hundred eighty-nine thousand, eight hundred forty".