77948490 has 16 divisors (see below), whose sum is σ = 187076448. Its totient is φ = 20786256.

The previous prime is 77948489. The next prime is 77948501. The reversal of 77948490 is 9484977.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299112 + ... + 1299171.

It is an arithmetic number, because the mean of its divisors is an integer number (11692278).

Almost surely, 2^77948490 is an apocalyptic number.

77948490 is an abundant number, since it is smaller than the sum of its proper divisors (109127958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77948490 is a wasteful number, since it uses less digits than its factorization.

77948490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598293.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 77948490 is about 8828.8442052174. The cubic root of 77948490 is about 427.1717941897.

It can be divided in two parts, 7 and 7948490, that added together give a palindrome (7948497).

The spelling of 77948490 in words is "seventy-seven million, nine hundred forty-eight thousand, four hundred ninety".