46897981 has 8 divisors (see below), whose sum is σ = 51871064. Its totient is φ = 42120000.

The previous prime is 46897969. The next prime is 46897987. The reversal of 46897981 is 18979864.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11792356 + 35105625 = 3434^2 + 5925^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 46897981 - 2⁷ = 46897853 is a prime.

It is a super-2 number, since 2×46897981² = 4398841243752722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46897987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48270 + ... + 49231.

It is an arithmetic number, because the mean of its divisors is an integer number (6483883).

Almost surely, 2^46897981 is an apocalyptic number.

It is an amenable number.

46897981 is a deficient number, since it is larger than the sum of its proper divisors (4973083).

46897981 is a wasteful number, since it uses less digits than its factorization.

46897981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97551.

The product of its digits is 870912, while the sum is 52.

The square root of 46897981 is about 6848.2100581101. The cubic root of 46897981 is about 360.6213062167.

The spelling of 46897981 in words is "forty-six million, eight hundred ninety-seven thousand, nine hundred eighty-one".