46903981 has 4 divisors (see below), whose sum is σ = 46924092. Its totient is φ = 46883872.

The previous prime is 46903973. The next prime is 46904017. The reversal of 46903981 is 18930964.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33698025 + 13205956 = 5805^2 + 3634^2 .

It is a cyclic number.

It is not a de Polignac number, because 46903981 - 2³ = 46903973 is a prime.

It is a super-2 number, since 2×46903981² = 4399966867296722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46903921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6016 + ... + 11401.

It is an arithmetic number, because the mean of its divisors is an integer number (11731023).

Almost surely, 2^46903981 is an apocalyptic number.

It is an amenable number.

46903981 is a deficient number, since it is larger than the sum of its proper divisors (20111).

46903981 is a wasteful number, since it uses less digits than its factorization.

46903981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20110.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 46903981 is about 6848.6481147742. The cubic root of 46903981 is about 360.6366845302.

The spelling of 46903981 in words is "forty-six million, nine hundred three thousand, nine hundred eighty-one".