46399290 has 128 divisors (see below), whose sum is σ = 138475008. Its totient is φ = 9707520.

The previous prime is 46399289. The next prime is 46399291. The reversal of 46399290 is 9299364.

It is an interprime number because it is at equal distance from previous prime (46399289) and next prime (46399291).

It is a super-2 number, since 2×46399290² = 4305788225008200, which contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (46399291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146212 + ... + 146528.

It is an arithmetic number, because the mean of its divisors is an integer number (1081836).

Almost surely, 2^46399290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 46399290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69237504).

46399290 is an abundant number, since it is smaller than the sum of its proper divisors (92075718).

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

46399290 is a wasteful number, since it uses less digits than its factorization.

46399290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 46399290 is about 6811.7024303767. The cubic root of 46399290 is about 359.3385229769.

The spelling of 46399290 in words is "forty-six million, three hundred ninety-nine thousand, two hundred ninety".