46399521 has 12 divisors (see below), whose sum is σ = 71966832. Its totient is φ = 26513928.

The previous prime is 46399519. The next prime is 46399567. The reversal of 46399521 is 12599364.

46399521 = 949² + 950² + ... + 997².

It is not a de Polignac number, because 46399521 - 2¹ = 46399519 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 46399521.

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 11 ways as a sum of consecutive naturals, for example, 157675 + ... + 157968.

It is an arithmetic number, because the mean of its divisors is an integer number (5997236).

Almost surely, 2^46399521 is an apocalyptic number.

It is an amenable number.

46399521 is a deficient number, since it is larger than the sum of its proper divisors (25567311).

46399521 is a wasteful number, since it uses less digits than its factorization.

46399521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315660 (or 315653 counting only the distinct ones).

The product of its digits is 58320, while the sum is 39.

The square root of 46399521 is about 6811.7193864692. The cubic root of 46399521 is about 359.3391193011.

The spelling of 46399521 in words is "forty-six million, three hundred ninety-nine thousand, five hundred twenty-one".