140830977 has 32 divisors (see below), whose sum is σ = 220796928. Its totient is φ = 78172416.

The previous prime is 140830969. The next prime is 140830981. The reversal of 140830977 is 779038041.

It is not a de Polignac number, because 140830977 - 2³ = 140830969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140830957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237193 + ... + 237785.

It is an arithmetic number, because the mean of its divisors is an integer number (6899904).

Almost surely, 2^140830977 is an apocalyptic number.

It is an amenable number.

140830977 is a deficient number, since it is larger than the sum of its proper divisors (79965951).

140830977 is a wasteful number, since it uses less digits than its factorization.

140830977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 140830977 is about 11867.2228006387. Note that the first 3 decimals coincide. The cubic root of 140830977 is about 520.2747278571.

It can be divided in two parts, 1408 and 30977, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 140830977 in words is "one hundred forty million, eight hundred thirty thousand, nine hundred seventy-seven".