40077400 has 48 divisors (see below), whose sum is σ = 101656440. Its totient is φ = 14572800.

The previous prime is 40077383. The next prime is 40077409. The reversal of 40077400 is 477004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40077409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6909 + ... + 11308.

Almost surely, 2^40077400 is an apocalyptic number.

40077400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40077400 is an abundant number, since it is smaller than the sum of its proper divisors (61579040).

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

40077400 is a wasteful number, since it uses less digits than its factorization.

40077400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18244 (or 18235 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 40077400 is about 6330.6713703998. The cubic root of 40077400 is about 342.2156341067.

The spelling of 40077400 in words is "forty million, seventy-seven thousand, four hundred".