87419749 has 8 divisors (see below), whose sum is σ = 90393408. Its totient is φ = 84486240.

The previous prime is 87419719. The next prime is 87419777. The reversal of 87419749 is 94791478.

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

It is a de Polignac number, because none of the positive numbers 2^k-87419749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87419719) 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, 5577 + ... + 14350.

It is an arithmetic number, because the mean of its divisors is an integer number (11299176).

Almost surely, 2^87419749 is an apocalyptic number.

It is an amenable number.

87419749 is a deficient number, since it is larger than the sum of its proper divisors (2973659).

87419749 is a wasteful number, since it uses less digits than its factorization.

87419749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20075.

The product of its digits is 508032, while the sum is 49.

The square root of 87419749 is about 9349.8528865432. The cubic root of 87419749 is about 443.8162351967.

The spelling of 87419749 in words is "eighty-seven million, four hundred nineteen thousand, seven hundred forty-nine".