90477619 has 2 divisors, whose sum is σ = 90477620. Its totient is φ = 90477618.

The previous prime is 90477613. The next prime is 90477637. The reversal of 90477619 is 91677409.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90477619 - 2¹¹ = 90475571 is a prime.

It is a super-2 number, since 2×90477619² = 16372399079818322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90477613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45238809 + 45238810.

It is an arithmetic number, because the mean of its divisors is an integer number (45238810).

Almost surely, 2^90477619 is an apocalyptic number.

90477619 is a deficient number, since it is larger than the sum of its proper divisors (1).

90477619 is an equidigital number, since it uses as much as digits as its factorization.

90477619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 90477619 is about 9511.9724032400. The cubic root of 90477619 is about 448.9318186889.

The spelling of 90477619 in words is "ninety million, four hundred seventy-seven thousand, six hundred nineteen".