46399428 has 18 divisors (see below), whose sum is σ = 117287534. Its totient is φ = 15466464.

The previous prime is 46399427. The next prime is 46399453. The reversal of 46399428 is 82499364.

46399428 is a `hidden beast` number, since 4 + 639 + 9 + 4 + 2 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46212804 + 186624 = 6798^2 + 432^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (46399421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 644401 + ... + 644472.

Almost surely, 2^46399428 is an apocalyptic number.

It is an amenable number.

46399428 is an abundant number, since it is smaller than the sum of its proper divisors (70888106).

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

46399428 is a wasteful number, since it uses less digits than its factorization.

46399428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288883 (or 1288878 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 46399428 is about 6811.7125599955. The cubic root of 46399428 is about 359.3388792228.

The spelling of 46399428 in words is "forty-six million, three hundred ninety-nine thousand, four hundred twenty-eight".